Q: Is 423,428 a Prime Number?
A: No, 423,428 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 423428 can be evenly divided by 1 2 4 37 74 148 2,861 5,722 11,444 105,857 211,714 and 423,428, with no remainder.
Since 423,428 cannot be divided by just 1 and 423,428, it is not a prime number.