Q: Is 423,406 a Prime Number?
A: No, 423,406 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 423406 can be evenly divided by 1 2 269 538 787 1,574 211,703 and 423,406, with no remainder.
Since 423,406 cannot be divided by just 1 and 423,406, it is not a prime number.