It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 158 702 is not a prime number.
For example, 158 702 can be divided by 2: 158 702 / 2 = 79 351.
For 158 702 to be a prime number, it would have been required that 158 702 has only two divisors, i.e., itself and 1.
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158 702 is an even number, because it is evenly divisible by 2: 158 702 / 2 = 79 351.
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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 158 702 is about 398.374.
Thus, the square root of 158 702 is not an integer, and therefore 158 702 is not a square number.
The square of a number (here 158 702) is the result of the product of this number (158 702) by itself (i.e., 158 702 × 158 702); the square of 158 702 is sometimes called "raising 158 702 to the power 2", or "158 702 squared".
The square of 158 702 is 25 186 324 804 because 158 702 × 158 702 = 158 7022 = 25 186 324 804.
As a consequence, 158 702 is the square root of 25 186 324 804.
The multiples of 158 702 are all integers evenly divisible by 158 702, that is all numbers such that the remainder of the division by 158 702 is zero. There are infinitely many multiples of 158 702. The smallest multiples of 158 702 are: