Q: Is 8,720,420 a Prime Number?
A: No, 8,720,420 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 8720420 can be evenly divided by 1 2 4 5 10 20 631 691 1,262 1,382 2,524 2,764 3,155 3,455 6,310 6,910 12,620 13,820 436,021 872,042 1,744,084 2,180,105 4,360,210 and 8,720,420, with no remainder.
Since 8,720,420 cannot be divided by just 1 and 8,720,420, it is not a prime number.