119
119 is the fire and ambulance emergency number in Japan, South Korea, Taiwan and China.
- Odd
- Composite
Where 119 fits
Why 119 is special
119 is the counterpart to 110 across much of East Asia: police on 110, fire and ambulance on 119. Japan adopted it in 1927, reportedly choosing the digits so that the long pull of 9 on a rotary dial gave a caller time to compose themselves before the call connected — an explanation widely repeated but not firmly documented. South Korea, Taiwan and China use the same split.
119 connects to:
- emergency telephone numbers — is used by
- 110 — appears alongside
Same number, different meanings
How 119 is understood across different contexts — never implying one meaning because of another.
- Mathematics
119 is the counterpart to 110 across much of East Asia: police on 110, fire and ambulance on 119. Japan adopted it in 1927, reportedly choosing the digits so that the long pull of 9 on a rotary dial gave a caller time to compose themselves before the call connected — an explanation widely repeated but not firmly documented. South Korea, Taiwan and China use the same split.
- Everyday life
Japan, South Korea and Taiwan reach fire and ambulance on 119 and police on 110, so the region shares a two-number convention rather than a single emergency number. China uses the same pair with the services assigned the same way.
- History
Japan assigned 119 to fire in 1927. The traditional explanation is ergonomic: 1 is the shortest pull on a rotary dial and 9 the longest, so the sequence is quick to start and gives a panicking caller a moment before the call connects. The date is documented; the reasoning is a received account rather than a recorded decision.
119 is part of
Factors & digit properties
- Divisors (4)
- 1, 7, 17, 119
- Prime factorisation
- 7 × 17
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 119
- Binary
- 1110111
- Octal
- 167
- Hexadecimal
- 77
- Roman numeral
- CXIX
- Scientific notation
- 1.190 × 10^2
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
119 reaches fire and ambulance across Japan, South Korea, Taiwan and China.
Numbers Around Us
- is used byEmergency telephone numbers
why?
Strength 0.50, confidence "high".
- appears alongside110
why?
Strength 0.50, confidence "high".
Everyday life
Japan, South Korea and Taiwan reach fire and ambulance on 119 and police on 110, so the region shares a two-number convention rather than a single emergency number. China uses the same pair with the services assigned the same way.
DocumentedEveryday lifeGeography: Japan, South Korea, Taiwan and ChinaPeriod: 20th century–Across Japan, South Korea, Taiwan and China the pairing is the same: 110 for police, 119 for fire and ambulance. Knowing one implies the other, which is the practical value of a shared convention across neighbouring countries that agree on little else about telephony.
DocumentedEveryday lifeGeography: Japan, South Korea, Taiwan and China
History
Japan assigned 119 to fire in 1927. The traditional explanation is ergonomic: 1 is the shortest pull on a rotary dial and 9 the longest, so the sequence is quick to start and gives a panicking caller a moment before the call connects. The date is documented; the reasoning is a received account rather than a recorded decision.
DocumentedHistoryGeography: JapanPeriod: 1927
Common questions
Is 119 a prime number?
No, 119 is not prime.
What are the factors of 119?
The factors of 119 are 1, 7, 17, 119.
What is 119 in Roman numerals?
119 in Roman numerals is CXIX.
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: 3 August 2026