It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 042 is not a prime number.
For example, 120 042 can be divided by 2: 120 042 / 2 = 60 021.
For 120 042 to be a prime number, it would have been required that 120 042 has only two divisors, i.e., itself and 1.
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120 042 is an even number, because it is evenly divisible by 2: 120 042 / 2 = 60 021.
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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 120 042 is about 346.471.
Thus, the square root of 120 042 is not an integer, and therefore 120 042 is not a square number.
The square of a number (here 120 042) is the result of the product of this number (120 042) by itself (i.e., 120 042 × 120 042); the square of 120 042 is sometimes called "raising 120 042 to the power 2", or "120 042 squared".
The square of 120 042 is 14 410 081 764 because 120 042 × 120 042 = 120 0422 = 14 410 081 764.
As a consequence, 120 042 is the square root of 14 410 081 764.
The multiples of 120 042 are all integers evenly divisible by 120 042, that is all numbers such that the remainder of the division by 120 042 is zero. There are infinitely many multiples of 120 042. The smallest multiples of 120 042 are: