It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 138 062 is not a prime number.
For example, 138 062 can be divided by 2: 138 062 / 2 = 69 031.
For 138 062 to be a prime number, it would have been required that 138 062 has only two divisors, i.e., itself and 1.
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138 062 is an even number, because it is evenly divisible by 2: 138 062 / 2 = 69 031.
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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 138 062 is about 371.567.
Thus, the square root of 138 062 is not an integer, and therefore 138 062 is not a square number.
The square of a number (here 138 062) is the result of the product of this number (138 062) by itself (i.e., 138 062 × 138 062); the square of 138 062 is sometimes called "raising 138 062 to the power 2", or "138 062 squared".
The square of 138 062 is 19 061 115 844 because 138 062 × 138 062 = 138 0622 = 19 061 115 844.
As a consequence, 138 062 is the square root of 19 061 115 844.
The multiples of 138 062 are all integers evenly divisible by 138 062, that is all numbers such that the remainder of the division by 138 062 is zero. There are infinitely many multiples of 138 062. The smallest multiples of 138 062 are: