Q: Is 421,136 a Prime Number?
A: No, 421,136 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 421136 can be evenly divided by 1 2 4 8 16 26,321 52,642 105,284 210,568 and 421,136, with no remainder.
Since 421,136 cannot be divided by just 1 and 421,136, it is not a prime number.