Q: Is 420,345 a Prime Number?
A: No, 420,345 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 420345 can be evenly divided by 1 3 5 9 15 45 9,341 28,023 46,705 84,069 140,115 and 420,345, with no remainder.
Since 420,345 cannot be divided by just 1 and 420,345, it is not a prime number.