odd, composite · 423rd positive integer
The number 423
423 is an odd composite number. It is the 423rd positive integer.
Quick reference
| Prime factorization | 3 × 3 × 47 |
| Divisors | 1, 3, 9, 47, 141, 423 |
| Binary | 110100111 |
| Hexadecimal | 0x1A7 |
| Roman numeral | CDXXIII |
| Digit sum | 9 |
| Properties | odd, composite |
Frequently asked
Is 423 a prime number?
No. 423 is composite. Its prime factorization is 3 × 3 × 47.
What are the factors of 423?
The factors (divisors) of 423 are 1, 3, 9, 47, 141, 423.
What is 423 in binary?
423 in binary is 110100111. In hexadecimal it's 1A7.
What is 423 as a Roman numeral?
423 in Roman numerals is CDXXIII.
What's the digit sum of 423?
Adding the digits of 423: 4 + 2 + 3 = 9.