It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 997 538 242 is not a prime number.
For example, 997 538 242 can be divided by 2: 997 538 242 / 2 = 498 769 121.
For 997 538 242 to be a prime number, it would have been required that 997 538 242 has only two divisors, i.e., itself and 1.
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997 538 242 is an even number, because it is evenly divisible by 2: 997 538 242 / 2 = 498 769 121.
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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 997 538 242 is about 31 583.829.
Thus, the square root of 997 538 242 is not an integer, and therefore 997 538 242 is not a square number.
The square of a number (here 997 538 242) is the result of the product of this number (997 538 242) by itself (i.e., 997 538 242 × 997 538 242); the square of 997 538 242 is sometimes called "raising 997 538 242 to the power 2", or "997 538 242 squared".
The square of 997 538 242 is 995 082 544 252 450 560 because 997 538 242 × 997 538 242 = 997 538 2422 = 995 082 544 252 450 560.
As a consequence, 997 538 242 is the square root of 995 082 544 252 450 560.
997 538 242 is a number with 9 digits.
The multiples of 997 538 242 are all integers evenly divisible by 997 538 242, that is all numbers such that the remainder of the division by 997 538 242 is zero. There are infinitely many multiples of 997 538 242. The smallest multiples of 997 538 242 are: