even, composite, perfect square, Fibonacci · 144th positive integer
The number 144
144 is an even composite number. It's known as a gross (12 dozen) and 12 squared. It is the 144th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 × 2 × 3 × 3 |
| Divisors | 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144 |
| Binary | 10010000 |
| Hexadecimal | 0x90 |
| Roman numeral | CXLIV |
| Digit sum | 9 |
| Properties | even, composite, perfect square, Fibonacci |
Why 144 is notable
A gross (12 dozen) and 12 squared.
Frequently asked
Is 144 a prime number?
No. 144 is composite. Its prime factorization is 2 × 2 × 2 × 2 × 3 × 3.
What are the factors of 144?
The factors (divisors) of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144.
What is 144 in binary?
144 in binary is 10010000. In hexadecimal it's 90.
What is 144 as a Roman numeral?
144 in Roman numerals is CXLIV.
What's the digit sum of 144?
Adding the digits of 144: 1 + 4 + 4 = 9.