Q: Is 1,423,421 a Prime Number?
A: No, 1,423,421 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 1423421 can be evenly divided by 1 53 107 251 5,671 13,303 26,857 and 1,423,421, with no remainder.
Since 1,423,421 cannot be divided by just 1 and 1,423,421, it is not a prime number.