Q: Is 7,478,420 a Prime Number?
A: No, 7,478,420 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 7478420 can be evenly divided by 1 2 4 5 10 20 199 398 796 995 1,879 1,990 3,758 3,980 7,516 9,395 18,790 37,580 373,921 747,842 1,495,684 1,869,605 3,739,210 and 7,478,420, with no remainder.
Since 7,478,420 cannot be divided by just 1 and 7,478,420, it is not a prime number.