Q: Is 400,920 a Prime Number?
A: No, 400,920 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 400920 can be evenly divided by 1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 39 40 52 60 65 78 104 120 130 156 195 257 260 312 390 514 520 771 780 1,028 1,285 1,542 1,560 2,056 2,570 3,084 3,341 3,855 5,140 6,168 6,682 7,710 10,023 10,280 13,364 15,420 16,705 20,046 26,728 30,840 33,410 40,092 50,115 66,820 80,184 100,230 133,640 200,460 and 400,920, with no remainder.
Since 400,920 cannot be divided by just 1 and 400,920, it is not a prime number.