Q: Is 142,640 a Prime Number?
A: No, 142,640 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 142640 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 1,783 3,566 7,132 8,915 14,264 17,830 28,528 35,660 71,320 and 142,640, with no remainder.
Since 142,640 cannot be divided by just 1 and 142,640, it is not a prime number.