Q: Is 1,642,240 a Prime Number?
A: No, 1,642,240 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 1642240 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 640 1,280 1,283 2,566 5,132 6,415 10,264 12,830 20,528 25,660 41,056 51,320 82,112 102,640 164,224 205,280 328,448 410,560 821,120 and 1,642,240, with no remainder.
Since 1,642,240 cannot be divided by just 1 and 1,642,240, it is not a prime number.