Q: Is 421,354 a Prime Number?
A: No, 421,354 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 421354 can be evenly divided by 1 2 457 461 914 922 210,677 and 421,354, with no remainder.
Since 421,354 cannot be divided by just 1 and 421,354, it is not a prime number.