Q: Is 1,423,520 a Prime Number?
A: No, 1,423,520 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 1423520 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 31 32 35 40 41 56 62 70 80 82 112 124 140 155 160 164 205 217 224 248 280 287 310 328 410 434 496 560 574 620 656 820 868 992 1,085 1,120 1,148 1,240 1,271 1,312 1,435 1,640 1,736 2,170 2,296 2,480 2,542 2,870 3,280 3,472 4,340 4,592 4,960 5,084 5,740 6,355 6,560 6,944 8,680 8,897 9,184 10,168 11,480 12,710 17,360 17,794 20,336 22,960 25,420 34,720 35,588 40,672 44,485 45,920 50,840 71,176 88,970 101,680 142,352 177,940 203,360 284,704 355,880 711,760 and 1,423,520, with no remainder.
Since 1,423,520 cannot be divided by just 1 and 1,423,520, it is not a prime number.