It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 418 is not a prime number.
For example, 118 418 can be divided by 2: 118 418 / 2 = 59 209.
For 118 418 to be a prime number, it would have been required that 118 418 has only two divisors, i.e., itself and 1.
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118 418 is an even number, because it is evenly divisible by 2: 118 418 / 2 = 59 209.
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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 118 418 is about 344.119.
Thus, the square root of 118 418 is not an integer, and therefore 118 418 is not a square number.
The square of a number (here 118 418) is the result of the product of this number (118 418) by itself (i.e., 118 418 × 118 418); the square of 118 418 is sometimes called "raising 118 418 to the power 2", or "118 418 squared".
The square of 118 418 is 14 022 822 724 because 118 418 × 118 418 = 118 4182 = 14 022 822 724.
As a consequence, 118 418 is the square root of 14 022 822 724.
The multiples of 118 418 are all integers evenly divisible by 118 418, that is all numbers such that the remainder of the division by 118 418 is zero. There are infinitely many multiples of 118 418. The smallest multiples of 118 418 are: