Q: Is 1,423,420 a Prime Number?
A: No, 1,423,420 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 1423420 can be evenly divided by 1 2 4 5 10 20 71,171 142,342 284,684 355,855 711,710 and 1,423,420, with no remainder.
Since 1,423,420 cannot be divided by just 1 and 1,423,420, it is not a prime number.