Q: Is 520,420 a Prime Number?
A: No, 520,420 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 520420 can be evenly divided by 1 2 4 5 10 20 26,021 52,042 104,084 130,105 260,210 and 520,420, with no remainder.
Since 520,420 cannot be divided by just 1 and 520,420, it is not a prime number.