It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 142 708 is not a prime number.
For example, 142 708 can be divided by 2: 142 708 / 2 = 71 354.
For 142 708 to be a prime number, it would have been required that 142 708 has only two divisors, i.e., itself and 1.
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142 708 is an even number, because it is evenly divisible by 2: 142 708 / 2 = 71 354.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 142 708 is about 377.767.
Thus, the square root of 142 708 is not an integer, and therefore 142 708 is not a square number.
The square of a number (here 142 708) is the result of the product of this number (142 708) by itself (i.e., 142 708 × 142 708); the square of 142 708 is sometimes called "raising 142 708 to the power 2", or "142 708 squared".
The square of 142 708 is 20 365 573 264 because 142 708 × 142 708 = 142 7082 = 20 365 573 264.
As a consequence, 142 708 is the square root of 20 365 573 264.
The multiples of 142 708 are all integers evenly divisible by 142 708, that is all numbers such that the remainder of the division by 142 708 is zero. There are infinitely many multiples of 142 708. The smallest multiples of 142 708 are: