It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 122 988 is not a prime number.
For example, 122 988 can be divided by 2: 122 988 / 2 = 61 494.
For 122 988 to be a prime number, it would have been required that 122 988 has only two divisors, i.e., itself and 1.
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122 988 is an even number, because it is evenly divisible by 2: 122 988 / 2 = 61 494.
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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 122 988 is about 350.696.
Thus, the square root of 122 988 is not an integer, and therefore 122 988 is not a square number.
The square of a number (here 122 988) is the result of the product of this number (122 988) by itself (i.e., 122 988 × 122 988); the square of 122 988 is sometimes called "raising 122 988 to the power 2", or "122 988 squared".
The square of 122 988 is 15 126 048 144 because 122 988 × 122 988 = 122 9882 = 15 126 048 144.
As a consequence, 122 988 is the square root of 15 126 048 144.
The multiples of 122 988 are all integers evenly divisible by 122 988, that is all numbers such that the remainder of the division by 122 988 is zero. There are infinitely many multiples of 122 988. The smallest multiples of 122 988 are: