It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 102 504 is not a prime number.
For example, 102 504 can be divided by 2: 102 504 / 2 = 51 252.
For 102 504 to be a prime number, it would have been required that 102 504 has only two divisors, i.e., itself and 1.
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102 504 is an even number, because it is evenly divisible by 2: 102 504 / 2 = 51 252.
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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 102 504 is about 320.162.
Thus, the square root of 102 504 is not an integer, and therefore 102 504 is not a square number.
The square of a number (here 102 504) is the result of the product of this number (102 504) by itself (i.e., 102 504 × 102 504); the square of 102 504 is sometimes called "raising 102 504 to the power 2", or "102 504 squared".
The square of 102 504 is 10 507 070 016 because 102 504 × 102 504 = 102 5042 = 10 507 070 016.
As a consequence, 102 504 is the square root of 10 507 070 016.
The multiples of 102 504 are all integers evenly divisible by 102 504, that is all numbers such that the remainder of the division by 102 504 is zero. There are infinitely many multiples of 102 504. The smallest multiples of 102 504 are: