Q: Is 840,720 a Prime Number?
A: No, 840,720 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 840720 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 40 48 60 62 80 93 113 120 124 155 186 226 240 248 310 339 372 452 465 496 565 620 678 744 904 930 1,130 1,240 1,356 1,488 1,695 1,808 1,860 2,260 2,480 2,712 3,390 3,503 3,720 4,520 5,424 6,780 7,006 7,440 9,040 10,509 13,560 14,012 17,515 21,018 27,120 28,024 35,030 42,036 52,545 56,048 70,060 84,072 105,090 140,120 168,144 210,180 280,240 420,360 and 840,720, with no remainder.
Since 840,720 cannot be divided by just 1 and 840,720, it is not a prime number.