Q: Is 420,040 a Prime Number?
A: No, 420,040 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 420040 can be evenly divided by 1 2 4 5 8 10 20 40 10,501 21,002 42,004 52,505 84,008 105,010 210,020 and 420,040, with no remainder.
Since 420,040 cannot be divided by just 1 and 420,040, it is not a prime number.