It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 102 242 is not a prime number.
For example, 102 242 can be divided by 2: 102 242 / 2 = 51 121.
For 102 242 to be a prime number, it would have been required that 102 242 has only two divisors, i.e., itself and 1.
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102 242 is an even number, because it is evenly divisible by 2: 102 242 / 2 = 51 121.
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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 102 242 is about 319.753.
Thus, the square root of 102 242 is not an integer, and therefore 102 242 is not a square number.
The square of a number (here 102 242) is the result of the product of this number (102 242) by itself (i.e., 102 242 × 102 242); the square of 102 242 is sometimes called "raising 102 242 to the power 2", or "102 242 squared".
The square of 102 242 is 10 453 426 564 because 102 242 × 102 242 = 102 2422 = 10 453 426 564.
As a consequence, 102 242 is the square root of 10 453 426 564.
The multiples of 102 242 are all integers evenly divisible by 102 242, that is all numbers such that the remainder of the division by 102 242 is zero. There are infinitely many multiples of 102 242. The smallest multiples of 102 242 are: