Q: Is 4,240,640 a Prime Number?
A: No, 4,240,640 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 4240640 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 640 1,280 3,313 6,626 13,252 16,565 26,504 33,130 53,008 66,260 106,016 132,520 212,032 265,040 424,064 530,080 848,128 1,060,160 2,120,320 and 4,240,640, with no remainder.
Since 4,240,640 cannot be divided by just 1 and 4,240,640, it is not a prime number.