It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 518 is not a prime number.
For example, 118 518 can be divided by 2: 118 518 / 2 = 59 259.
For 118 518 to be a prime number, it would have been required that 118 518 has only two divisors, i.e., itself and 1.
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118 518 is an even number, because it is evenly divisible by 2: 118 518 / 2 = 59 259.
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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 118 518 is about 344.264.
Thus, the square root of 118 518 is not an integer, and therefore 118 518 is not a square number.
The square of a number (here 118 518) is the result of the product of this number (118 518) by itself (i.e., 118 518 × 118 518); the square of 118 518 is sometimes called "raising 118 518 to the power 2", or "118 518 squared".
The square of 118 518 is 14 046 516 324 because 118 518 × 118 518 = 118 5182 = 14 046 516 324.
As a consequence, 118 518 is the square root of 14 046 516 324.
The multiples of 118 518 are all integers evenly divisible by 118 518, that is all numbers such that the remainder of the division by 118 518 is zero. There are infinitely many multiples of 118 518. The smallest multiples of 118 518 are: