Q: Is 402,720 a Prime Number?
A: No, 402,720 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 402720 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 839 1,678 2,517 3,356 4,195 5,034 6,712 8,390 10,068 12,585 13,424 16,780 20,136 25,170 26,848 33,560 40,272 50,340 67,120 80,544 100,680 134,240 201,360 and 402,720, with no remainder.
Since 402,720 cannot be divided by just 1 and 402,720, it is not a prime number.