Q: Is 421,454 a Prime Number?
A: No, 421,454 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 421454 can be evenly divided by 1 2 11 22 19,157 38,314 210,727 and 421,454, with no remainder.
Since 421,454 cannot be divided by just 1 and 421,454, it is not a prime number.