Q: Is 42,400 a Prime Number?
A: No, 42,400 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 42400 can be evenly divided by 1 2 4 5 8 10 16 20 25 32 40 50 53 80 100 106 160 200 212 265 400 424 530 800 848 1,060 1,325 1,696 2,120 2,650 4,240 5,300 8,480 10,600 21,200 and 42,400, with no remainder.
Since 42,400 cannot be divided by just 1 and 42,400, it is not a prime number.