Q: Is 421,329 a Prime Number?
A: No, 421,329 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 421329 can be evenly divided by 1 3 140,443 and 421,329, with no remainder.
Since 421,329 cannot be divided by just 1 and 421,329, it is not a prime number.