It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 842 is not a prime number.
For example, 118 842 can be divided by 2: 118 842 / 2 = 59 421.
For 118 842 to be a prime number, it would have been required that 118 842 has only two divisors, i.e., itself and 1.
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118 842 is an even number, because it is evenly divisible by 2: 118 842 / 2 = 59 421.
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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 118 842 is about 344.735.
Thus, the square root of 118 842 is not an integer, and therefore 118 842 is not a square number.
The square of a number (here 118 842) is the result of the product of this number (118 842) by itself (i.e., 118 842 × 118 842); the square of 118 842 is sometimes called "raising 118 842 to the power 2", or "118 842 squared".
The square of 118 842 is 14 123 420 964 because 118 842 × 118 842 = 118 8422 = 14 123 420 964.
As a consequence, 118 842 is the square root of 14 123 420 964.
The multiples of 118 842 are all integers evenly divisible by 118 842, that is all numbers such that the remainder of the division by 118 842 is zero. There are infinitely many multiples of 118 842. The smallest multiples of 118 842 are: