Q: Is 72,420 a Prime Number?
A: No, 72,420 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 72420 can be evenly divided by 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 71 85 102 142 170 204 213 255 284 340 355 426 510 710 852 1,020 1,065 1,207 1,420 2,130 2,414 3,621 4,260 4,828 6,035 7,242 12,070 14,484 18,105 24,140 36,210 and 72,420, with no remainder.
Since 72,420 cannot be divided by just 1 and 72,420, it is not a prime number.