It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 138 372 142 is not a prime number.
For example, 138 372 142 can be divided by 2: 138 372 142 / 2 = 69 186 071.
For 138 372 142 to be a prime number, it would have been required that 138 372 142 has only two divisors, i.e., itself and 1.
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138 372 142 is an even number, because it is evenly divisible by 2: 138 372 142 / 2 = 69 186 071.
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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 138 372 142 is about 11 763.169.
Thus, the square root of 138 372 142 is not an integer, and therefore 138 372 142 is not a square number.
The square of a number (here 138 372 142) is the result of the product of this number (138 372 142) by itself (i.e., 138 372 142 × 138 372 142); the square of 138 372 142 is sometimes called "raising 138 372 142 to the power 2", or "138 372 142 squared".
The square of 138 372 142 is 19 146 849 681 668 164 because 138 372 142 × 138 372 142 = 138 372 1422 = 19 146 849 681 668 164.
As a consequence, 138 372 142 is the square root of 19 146 849 681 668 164.
138 372 142 is a number with 9 digits.
The multiples of 138 372 142 are all integers evenly divisible by 138 372 142, that is all numbers such that the remainder of the division by 138 372 142 is zero. There are infinitely many multiples of 138 372 142. The smallest multiples of 138 372 142 are: