Q: Is 1,423,428 a Prime Number?
A: No, 1,423,428 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 1423428 can be evenly divided by 1 2 3 4 6 12 118,619 237,238 355,857 474,476 711,714 and 1,423,428, with no remainder.
Since 1,423,428 cannot be divided by just 1 and 1,423,428, it is not a prime number.