It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 397 is not a prime number.
For example, 118 397 can be divided by 197: 118 397 / 197 = 601.
For 118 397 to be a prime number, it would have been required that 118 397 has only two divisors, i.e., itself and 1.
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118 397 is an odd number, because it is not evenly divisible by 2.
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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 118 397 is about 344.089.
Thus, the square root of 118 397 is not an integer, and therefore 118 397 is not a square number.
The square of a number (here 118 397) is the result of the product of this number (118 397) by itself (i.e., 118 397 × 118 397); the square of 118 397 is sometimes called "raising 118 397 to the power 2", or "118 397 squared".
The square of 118 397 is 14 017 849 609 because 118 397 × 118 397 = 118 3972 = 14 017 849 609.
As a consequence, 118 397 is the square root of 14 017 849 609.
The multiples of 118 397 are all integers evenly divisible by 118 397, that is all numbers such that the remainder of the division by 118 397 is zero. There are infinitely many multiples of 118 397. The smallest multiples of 118 397 are: