Q: Is 43,540 a Prime Number?
A: No, 43,540 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 43540 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 311 622 1,244 1,555 2,177 3,110 4,354 6,220 8,708 10,885 21,770 and 43,540, with no remainder.
Since 43,540 cannot be divided by just 1 and 43,540, it is not a prime number.