It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 142 602 is not a prime number.
For example, 142 602 can be divided by 2: 142 602 / 2 = 71 301.
For 142 602 to be a prime number, it would have been required that 142 602 has only two divisors, i.e., itself and 1.
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142 602 is an even number, because it is evenly divisible by 2: 142 602 / 2 = 71 301.
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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 142 602 is about 377.627.
Thus, the square root of 142 602 is not an integer, and therefore 142 602 is not a square number.
The square of a number (here 142 602) is the result of the product of this number (142 602) by itself (i.e., 142 602 × 142 602); the square of 142 602 is sometimes called "raising 142 602 to the power 2", or "142 602 squared".
The square of 142 602 is 20 335 330 404 because 142 602 × 142 602 = 142 6022 = 20 335 330 404.
As a consequence, 142 602 is the square root of 20 335 330 404.
The multiples of 142 602 are all integers evenly divisible by 142 602, that is all numbers such that the remainder of the division by 142 602 is zero. There are infinitely many multiples of 142 602. The smallest multiples of 142 602 are: