Q: Is 406,720 a Prime Number?
A: No, 406,720 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 406720 can be evenly divided by 1 2 4 5 8 10 16 20 31 32 40 41 62 64 80 82 124 155 160 164 205 248 310 320 328 410 496 620 656 820 992 1,240 1,271 1,312 1,640 1,984 2,480 2,542 2,624 3,280 4,960 5,084 6,355 6,560 9,920 10,168 12,710 13,120 20,336 25,420 40,672 50,840 81,344 101,680 203,360 and 406,720, with no remainder.
Since 406,720 cannot be divided by just 1 and 406,720, it is not a prime number.