It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 509 242 328 is not a prime number.
For example, 509 242 328 can be divided by 2: 509 242 328 / 2 = 254 621 164.
For 509 242 328 to be a prime number, it would have been required that 509 242 328 has only two divisors, i.e., itself and 1.
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509 242 328 is an even number, because it is evenly divisible by 2: 509 242 328 / 2 = 254 621 164.
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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 509 242 328 is about 22 566.398.
Thus, the square root of 509 242 328 is not an integer, and therefore 509 242 328 is not a square number.
The square of a number (here 509 242 328) is the result of the product of this number (509 242 328) by itself (i.e., 509 242 328 × 509 242 328); the square of 509 242 328 is sometimes called "raising 509 242 328 to the power 2", or "509 242 328 squared".
The square of 509 242 328 is 259 327 748 626 859 584 because 509 242 328 × 509 242 328 = 509 242 3282 = 259 327 748 626 859 584.
As a consequence, 509 242 328 is the square root of 259 327 748 626 859 584.
509 242 328 is a number with 9 digits.
The multiples of 509 242 328 are all integers evenly divisible by 509 242 328, that is all numbers such that the remainder of the division by 509 242 328 is zero. There are infinitely many multiples of 509 242 328. The smallest multiples of 509 242 328 are: