It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 102 042 is not a prime number.
For example, 102 042 can be divided by 2: 102 042 / 2 = 51 021.
For 102 042 to be a prime number, it would have been required that 102 042 has only two divisors, i.e., itself and 1.
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102 042 is an even number, because it is evenly divisible by 2: 102 042 / 2 = 51 021.
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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 102 042 is about 319.440.
Thus, the square root of 102 042 is not an integer, and therefore 102 042 is not a square number.
The square of a number (here 102 042) is the result of the product of this number (102 042) by itself (i.e., 102 042 × 102 042); the square of 102 042 is sometimes called "raising 102 042 to the power 2", or "102 042 squared".
The square of 102 042 is 10 412 569 764 because 102 042 × 102 042 = 102 0422 = 10 412 569 764.
As a consequence, 102 042 is the square root of 10 412 569 764.
The multiples of 102 042 are all integers evenly divisible by 102 042, that is all numbers such that the remainder of the division by 102 042 is zero. There are infinitely many multiples of 102 042. The smallest multiples of 102 042 are: