Q: Is 320,420 a Prime Number?
A: No, 320,420 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 320420 can be evenly divided by 1 2 4 5 10 20 37 74 148 185 370 433 740 866 1,732 2,165 4,330 8,660 16,021 32,042 64,084 80,105 160,210 and 320,420, with no remainder.
Since 320,420 cannot be divided by just 1 and 320,420, it is not a prime number.