Q: Is 421,547 a Prime Number?
A: No, 421,547 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 421547 can be evenly divided by 1 7 49 343 1,229 8,603 60,221 and 421,547, with no remainder.
Since 421,547 cannot be divided by just 1 and 421,547, it is not a prime number.