4140
4140 is a chromium-molybdenum alloy steel.
- Even
- Composite
Where 4140 fits
Why 4140 is special
It is the standard choice for shafts, gears and tooling because it can be heat treated to a wide range of strengths from one stock material.
Factors & digit properties
- Divisors (36)
- 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140
- Prime factorisation
- 2^2 × 3^2 × 5 × 23
- Digit sum
- 9
- Digital root
- 9
Representations
- Decimal
- 4140
- Binary
- 1000000101100
- Octal
- 10054
- Hexadecimal
- 102c
- Scientific notation
- 4.140 × 10^3
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
Both are shaft and gear materials; the alloy steel hardens deeper and the carbon steel is cheaper.
View 1045 →Both are chromium-molybdenum alloy steels; nickel gives the first strength through much thicker sections.
View 4340 →Technology & computing
AISI 4140 is a low-alloy steel with chromium and molybdenum, widely used for components requiring good toughness and hardenability after quenching and tempering.
DocumentedTechnology & computingGeography: International — AISI, SAE and Aluminium Association designations
Common questions
Is 4140 a prime number?
No, 4140 is not prime.
What are the factors of 4140?
The factors of 4140 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140.
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