Q: Is 2,421,440 a Prime Number?
A: No, 2,421,440 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 2421440 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 47 56 64 70 80 92 94 112 115 140 160 161 184 188 224 230 235 280 320 322 329 368 376 448 460 470 560 644 658 736 752 805 920 940 1,081 1,120 1,288 1,316 1,472 1,504 1,610 1,645 1,840 1,880 2,162 2,240 2,576 2,632 3,008 3,220 3,290 3,680 3,760 4,324 5,152 5,264 5,405 6,440 6,580 7,360 7,520 7,567 8,648 10,304 10,528 10,810 12,880 13,160 15,040 15,134 17,296 21,056 21,620 25,760 26,320 30,268 34,592 37,835 43,240 51,520 52,640 60,536 69,184 75,670 86,480 105,280 121,072 151,340 172,960 242,144 302,680 345,920 484,288 605,360 1,210,720 and 2,421,440, with no remainder.
Since 2,421,440 cannot be divided by just 1 and 2,421,440, it is not a prime number.