Q: Is 422,720 a Prime Number?
A: No, 422,720 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 422720 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 160 320 1,321 2,642 5,284 6,605 10,568 13,210 21,136 26,420 42,272 52,840 84,544 105,680 211,360 and 422,720, with no remainder.
Since 422,720 cannot be divided by just 1 and 422,720, it is not a prime number.