It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 137 942 is not a prime number.
For example, 137 942 can be divided by 2: 137 942 / 2 = 68 971.
For 137 942 to be a prime number, it would have been required that 137 942 has only two divisors, i.e., itself and 1.
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137 942 is an even number, because it is evenly divisible by 2: 137 942 / 2 = 68 971.
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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 137 942 is about 371.405.
Thus, the square root of 137 942 is not an integer, and therefore 137 942 is not a square number.
The square of a number (here 137 942) is the result of the product of this number (137 942) by itself (i.e., 137 942 × 137 942); the square of 137 942 is sometimes called "raising 137 942 to the power 2", or "137 942 squared".
The square of 137 942 is 19 027 995 364 because 137 942 × 137 942 = 137 9422 = 19 027 995 364.
As a consequence, 137 942 is the square root of 19 027 995 364.
The multiples of 137 942 are all integers evenly divisible by 137 942, that is all numbers such that the remainder of the division by 137 942 is zero. There are infinitely many multiples of 137 942. The smallest multiples of 137 942 are: