Q: Is 421,209 a Prime Number?
A: No, 421,209 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 421209 can be evenly divided by 1 3 9 17 51 153 2,753 8,259 24,777 46,801 140,403 and 421,209, with no remainder.
Since 421,209 cannot be divided by just 1 and 421,209, it is not a prime number.