102
102 is the police number in several post-Soviet states and the ambulance number in India.
- Even
- Composite
Where 102 fits
Why 102 is special
102 belongs to two unrelated systems. Across Russia, Ukraine, Kazakhstan and neighbouring states it is the police line in a Soviet-era scheme that also assigns 101 to fire and 103 to ambulance. In India it is the free ambulance service for pregnant women and infants, distinct from the general 108 emergency ambulance.
Same number, different meanings
How 102 is understood across different contexts — never implying one meaning because of another.
- Mathematics
102 belongs to two unrelated systems. Across Russia, Ukraine, Kazakhstan and neighbouring states it is the police line in a Soviet-era scheme that also assigns 101 to fire and 103 to ambulance. In India it is the free ambulance service for pregnant women and infants, distinct from the general 108 emergency ambulance.
- Science
Nobelium's name came from a Swedish claim that was never reproduced. Later work credited others, and the original name was kept — the only element named after a retracted discovery.
- Geography
102 is police across Russia, Ukraine, Kazakhstan and neighbouring states under a Soviet-era scheme, and a free ambulance line for pregnant women and infants in India. Neither derives from the other. A number that means police in one country and maternal transport in another is the clearest possible case against assuming any emergency number is universal.
- Law & regulation
Tartrazine and five other colours must carry a label warning about possible effects on children's attention in the EU and UK. Mandated self-warning is unusual and followed from a specific 2007 study.
Factors & digit properties
- Divisors (8)
- 1, 2, 3, 6, 17, 34, 51, 102
- Prime factorisation
- 2 × 3 × 17
- Digit sum
- 3
- Digital root
- 3
Representations
- Decimal
- 102
- Scientific notation
- 1.020 × 10^2
Roman numerals
C I I
Binary
1 1 0 0 1 1 0
1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 1 × 2 + 0 × 1 = 102
Octal
1 4 6
1 × 64 + 4 × 8 + 6 × 1 = 102
Hexadecimal
6 6
6 × 16 + 6 × 1 = 102
Read as powers of two: 64 + 32 + 4 + 2 = 102.
In historical numeral systems
Egyptian
1 coil of rope, 2 strokes
1 × 100 + 2 × 1 = 102. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 vertical wedge (sixties place), 4 corner wedges + 2 vertical wedges (units place)
1 × 60 + 42 = 102. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
rho, then beta, marked as a numeral
rho-beta + keraia
rho + beta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
qof, then bet
qof-bet
qof (100) + bet (2) = 102, written in descending order.
Maya
1 bar (upper, twenties place) over 2 dots (lower, units place)
5 × 20 + 2 = 102. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
Two thirds of a single Soviet-era scheme still in use across the successor states: 101 fire, 102 police, 103 ambulance, 104 gas leak. The numbers are learned as a set, and the separate gas line is what distinguishes the scheme from most others.
View 103 →One tower's slenderness is a consequence of land price and the other's height was the record for forty years.
View 432 →Science
Nobelium's name came from a Swedish claim that was never reproduced. Later work credited others, and the original name was kept — the only element named after a retracted discovery.
DocumentedScience
Geography
102 is police across Russia, Ukraine, Kazakhstan and neighbouring states under a Soviet-era scheme, and a free ambulance line for pregnant women and infants in India. Neither derives from the other. A number that means police in one country and maternal transport in another is the clearest possible case against assuming any emergency number is universal.
DocumentedGeographyGeography: post-Soviet states and India
Law & regulation
Tartrazine and five other colours must carry a label warning about possible effects on children's attention in the EU and UK. Mandated self-warning is unusual and followed from a specific 2007 study.
DocumentedLaw & regulationGeography: European Union and United Kingdom
Common questions
Is 102 a prime number?
No, 102 is not prime.
What are the factors of 102?
The factors of 102 are 1, 2, 3, 6, 17, 34, 51, 102.
What is 102 in Roman numerals?
102 in Roman numerals is CII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 3 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026