Q: Is 161,420 a Prime Number?
A: No, 161,420 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 161420 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 1,153 2,306 4,612 5,765 8,071 11,530 16,142 23,060 32,284 40,355 80,710 and 161,420, with no remainder.
Since 161,420 cannot be divided by just 1 and 161,420, it is not a prime number.