Q: Is 16,420 a Prime Number?
A: No, 16,420 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 16420 can be evenly divided by 1 2 4 5 10 20 821 1,642 3,284 4,105 8,210 and 16,420, with no remainder.
Since 16,420 cannot be divided by just 1 and 16,420, it is not a prime number.