Q: Is 478,420 a Prime Number?
A: No, 478,420 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 478420 can be evenly divided by 1 2 4 5 10 19 20 38 76 95 190 380 1,259 2,518 5,036 6,295 12,590 23,921 25,180 47,842 95,684 119,605 239,210 and 478,420, with no remainder.
Since 478,420 cannot be divided by just 1 and 478,420, it is not a prime number.