It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 516 is not a prime number.
For example, 240 516 can be divided by 2: 240 516 / 2 = 120 258.
For 240 516 to be a prime number, it would have been required that 240 516 has only two divisors, i.e., itself and 1.
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240 516 is an even number, because it is evenly divisible by 2: 240 516 / 2 = 120 258.
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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 240 516 is about 490.424.
Thus, the square root of 240 516 is not an integer, and therefore 240 516 is not a square number.
The square of a number (here 240 516) is the result of the product of this number (240 516) by itself (i.e., 240 516 × 240 516); the square of 240 516 is sometimes called "raising 240 516 to the power 2", or "240 516 squared".
The square of 240 516 is 57 847 946 256 because 240 516 × 240 516 = 240 5162 = 57 847 946 256.
As a consequence, 240 516 is the square root of 57 847 946 256.
The multiples of 240 516 are all integers evenly divisible by 240 516, that is all numbers such that the remainder of the division by 240 516 is zero. There are infinitely many multiples of 240 516. The smallest multiples of 240 516 are: