It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 102 018 is not a prime number.
For example, 102 018 can be divided by 2: 102 018 / 2 = 51 009.
For 102 018 to be a prime number, it would have been required that 102 018 has only two divisors, i.e., itself and 1.
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102 018 is an even number, because it is evenly divisible by 2: 102 018 / 2 = 51 009.
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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 102 018 is about 319.403.
Thus, the square root of 102 018 is not an integer, and therefore 102 018 is not a square number.
The square of a number (here 102 018) is the result of the product of this number (102 018) by itself (i.e., 102 018 × 102 018); the square of 102 018 is sometimes called "raising 102 018 to the power 2", or "102 018 squared".
The square of 102 018 is 10 407 672 324 because 102 018 × 102 018 = 102 0182 = 10 407 672 324.
As a consequence, 102 018 is the square root of 10 407 672 324.
The multiples of 102 018 are all integers evenly divisible by 102 018, that is all numbers such that the remainder of the division by 102 018 is zero. There are infinitely many multiples of 102 018. The smallest multiples of 102 018 are: