Q: Is 1,243,520 a Prime Number?
A: No, 1,243,520 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 1243520 can be evenly divided by 1 2 4 5 8 10 16 20 29 32 40 58 64 67 80 116 128 134 145 160 232 268 290 320 335 464 536 580 640 670 928 1,072 1,160 1,340 1,856 1,943 2,144 2,320 2,680 3,712 3,886 4,288 4,640 5,360 7,772 8,576 9,280 9,715 10,720 15,544 18,560 19,430 21,440 31,088 38,860 42,880 62,176 77,720 124,352 155,440 248,704 310,880 621,760 and 1,243,520, with no remainder.
Since 1,243,520 cannot be divided by just 1 and 1,243,520, it is not a prime number.