Q: Is 423,720 a Prime Number?
A: No, 423,720 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 423720 can be evenly divided by 1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 30 33 36 40 44 45 55 60 66 72 88 90 99 107 110 120 132 165 180 198 214 220 264 321 330 360 396 428 440 495 535 642 660 792 856 963 990 1,070 1,177 1,284 1,320 1,605 1,926 1,980 2,140 2,354 2,568 3,210 3,531 3,852 3,960 4,280 4,708 4,815 5,885 6,420 7,062 7,704 9,416 9,630 10,593 11,770 12,840 14,124 17,655 19,260 21,186 23,540 28,248 35,310 38,520 42,372 47,080 52,965 70,620 84,744 105,930 141,240 211,860 and 423,720, with no remainder.
Since 423,720 cannot be divided by just 1 and 423,720, it is not a prime number.