Q: Is 421,745 a Prime Number?
A: No, 421,745 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 421745 can be evenly divided by 1 5 84,349 and 421,745, with no remainder.
Since 421,745 cannot be divided by just 1 and 421,745, it is not a prime number.