1140
1140 is a year in the 12th century. The rebuilt choir of Saint-Denis combined the pointed arch, rib vault and flying buttress, and Gothic architecture dates from it (France).
- Even
- Composite
Where 1140 fits
Why 1140 is special
1140 has a profile because of what happened in it rather than because of any property of the number: the rebuilt choir of Saint-Denis combined the pointed arch, rib vault and flying buttress, and Gothic architecture dates from it (France).
1140 is part of
Factors & digit properties
- Divisors (24)
- 1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140
- Prime factorisation
- 2^2 × 3 × 5 × 19
- Digit sum
- 6
- Digital root
- 6
Representations
- Decimal
- 1140
- Scientific notation
- 1.140 × 10^3
Roman numerals
M C X L
MCXL uses the subtractive pair XL: ten before fifty — fifty minus ten.
Binary
1 0 0 0 1 1 1 0 1 0 0
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 1,140
Octal
2 1 6 4
2 × 512 + 1 × 64 + 6 × 8 + 4 × 1 = 1,140
Hexadecimal
4 7 4
4 × 256 + 7 × 16 + 4 × 1 = 1,140
Read as powers of two: 1,024 + 64 + 32 + 16 + 4 = 1,140.
In historical numeral systems
Egyptian
1 lotus, 1 coil of rope, 4 hobbles
1 × 1,000 + 1 × 100 + 4 × 10 = 1,140. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 9 vertical wedges (sixties place), empty units place
19 × 60 + 0 = 1140. Places are separated by a space on the tablet, with the higher place written first. The second place is empty, and this is precisely the case the early system could not write unambiguously — the same wedges alone would also read as 1.
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
1140 is a year in the 12th century, in the 1140s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Technology & computing
In 1140, the rebuilt choir of Saint-Denis combined the pointed arch, rib vault and flying buttress, and Gothic architecture dates from it (France).
DocumentedTechnology & computingGeography: FrancePeriod: 1140
Common questions
Is 1140 a prime number?
No, 1140 is not prime.
What are the factors of 1140?
The factors of 1140 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140.
What is 1140 in Roman numerals?
1140 in Roman numerals is MCXL. XL is subtractive: ten before fifty — fifty minus ten. Written additively it would be MCXXXX, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026