It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 642 is not a prime number.
For example, 118 642 can be divided by 2: 118 642 / 2 = 59 321.
For 118 642 to be a prime number, it would have been required that 118 642 has only two divisors, i.e., itself and 1.
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118 642 is an even number, because it is evenly divisible by 2: 118 642 / 2 = 59 321.
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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 118 642 is about 344.444.
Thus, the square root of 118 642 is not an integer, and therefore 118 642 is not a square number.
The square of a number (here 118 642) is the result of the product of this number (118 642) by itself (i.e., 118 642 × 118 642); the square of 118 642 is sometimes called "raising 118 642 to the power 2", or "118 642 squared".
The square of 118 642 is 14 075 924 164 because 118 642 × 118 642 = 118 6422 = 14 075 924 164.
As a consequence, 118 642 is the square root of 14 075 924 164.
The multiples of 118 642 are all integers evenly divisible by 118 642, that is all numbers such that the remainder of the division by 118 642 is zero. There are infinitely many multiples of 118 642. The smallest multiples of 118 642 are: