It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 509 242 566 is not a prime number.
For example, 509 242 566 can be divided by 2: 509 242 566 / 2 = 254 621 283.
For 509 242 566 to be a prime number, it would have been required that 509 242 566 has only two divisors, i.e., itself and 1.
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509 242 566 is an even number, because it is evenly divisible by 2: 509 242 566 / 2 = 254 621 283.
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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 509 242 566 is about 22 566.403.
Thus, the square root of 509 242 566 is not an integer, and therefore 509 242 566 is not a square number.
The square of a number (here 509 242 566) is the result of the product of this number (509 242 566) by itself (i.e., 509 242 566 × 509 242 566); the square of 509 242 566 is sometimes called "raising 509 242 566 to the power 2", or "509 242 566 squared".
The square of 509 242 566 is 259 327 991 026 264 352 because 509 242 566 × 509 242 566 = 509 242 5662 = 259 327 991 026 264 352.
As a consequence, 509 242 566 is the square root of 259 327 991 026 264 352.
509 242 566 is a number with 9 digits.
The multiples of 509 242 566 are all integers evenly divisible by 509 242 566, that is all numbers such that the remainder of the division by 509 242 566 is zero. There are infinitely many multiples of 509 242 566. The smallest multiples of 509 242 566 are: