It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 018 is not a prime number.
For example, 120 018 can be divided by 2: 120 018 / 2 = 60 009.
For 120 018 to be a prime number, it would have been required that 120 018 has only two divisors, i.e., itself and 1.
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120 018 is an even number, because it is evenly divisible by 2: 120 018 / 2 = 60 009.
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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 120 018 is about 346.436.
Thus, the square root of 120 018 is not an integer, and therefore 120 018 is not a square number.
The square of a number (here 120 018) is the result of the product of this number (120 018) by itself (i.e., 120 018 × 120 018); the square of 120 018 is sometimes called "raising 120 018 to the power 2", or "120 018 squared".
The square of 120 018 is 14 404 320 324 because 120 018 × 120 018 = 120 0182 = 14 404 320 324.
As a consequence, 120 018 is the square root of 14 404 320 324.
The multiples of 120 018 are all integers evenly divisible by 120 018, that is all numbers such that the remainder of the division by 120 018 is zero. There are infinitely many multiples of 120 018. The smallest multiples of 120 018 are: