1742
1742 is the year Celsius proposed his temperature scale.
- Even
- Composite
Where 1742 fits
Why 1742 is special
His original scale ran backwards — 0 for boiling and 100 for freezing — and was inverted after his death. The scale in use today is not the one he published.
1742 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 13, 26, 67, 134, 871, 1742
- Prime factorisation
- 2 × 13 × 67
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 1742
- Binary
- 11011001110
- Octal
- 3316
- Hexadecimal
- 6ce
- Roman numeral
- MDCCXLII
- Scientific notation
- 1.742 × 10^3
Other mathematical patterns
- Deficient number
- Happy number
Science
Celsius set 0 at the boiling point of water and 100 at freezing. The inversion to the familiar arrangement happened after his death, so the scale bearing his name is the reverse of what he proposed.
DocumentedSciencePeriod: 1742
Common questions
Is 1742 a prime number?
No, 1742 is not prime.
What are the factors of 1742?
The factors of 1742 are 1, 2, 13, 26, 67, 134, 871, 1742.
What is 1742 in Roman numerals?
1742 in Roman numerals is MDCCXLII.
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: 3 August 2026