Q: Is 142,540 a Prime Number?

A: No, 142,540 is not a prime number.

Why is 142,540 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 142540 can be evenly divided by 1 2 4 5 10 20 7,127 14,254 28,508 35,635 71,270 and 142,540, with no remainder.

Since 142,540 cannot be divided by just 1 and 142,540, it is not a prime number.

Number	142,538	142,539	142,541	142,542
Prime?	no	no	no	no

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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