even, composite · 12th positive integer
The number 12
12 is an even composite number. It's known as the number of months in a year and the number of hours on a clock face. It is the 12th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 3 |
| Divisors | 1, 2, 3, 4, 6, 12 |
| Binary | 1100 |
| Hexadecimal | 0xC |
| Roman numeral | XII |
| Digit sum | 3 |
| Properties | even, composite |
Why 12 is notable
The number of months in a year and the number of hours on a clock face.
Frequently asked
Is 12 a prime number?
No. 12 is composite. Its prime factorization is 2 × 2 × 3.
What are the factors of 12?
The factors (divisors) of 12 are 1, 2, 3, 4, 6, 12.
What is 12 in binary?
12 in binary is 1100. In hexadecimal it's C.
What is 12 as a Roman numeral?
12 in Roman numerals is XII.
What's the digit sum of 12?
Adding the digits of 12: 1 + 2 = 3.