It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 72 842 264 is not a prime number.
For example, 72 842 264 can be divided by 2: 72 842 264 / 2 = 36 421 132.
For 72 842 264 to be a prime number, it would have been required that 72 842 264 has only two divisors, i.e., itself and 1.
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72 842 264 is an even number, because it is evenly divisible by 2: 72 842 264 / 2 = 36 421 132.
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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 72 842 264 is about 8 534.768.
Thus, the square root of 72 842 264 is not an integer, and therefore 72 842 264 is not a square number.
The square of a number (here 72 842 264) is the result of the product of this number (72 842 264) by itself (i.e., 72 842 264 × 72 842 264); the square of 72 842 264 is sometimes called "raising 72 842 264 to the power 2", or "72 842 264 squared".
The square of 72 842 264 is 5 305 995 424 645 696 because 72 842 264 × 72 842 264 = 72 842 2642 = 5 305 995 424 645 696.
As a consequence, 72 842 264 is the square root of 5 305 995 424 645 696.
72 842 264 is a number with 8 digits.
The multiples of 72 842 264 are all integers evenly divisible by 72 842 264, that is all numbers such that the remainder of the division by 72 842 264 is zero. There are infinitely many multiples of 72 842 264. The smallest multiples of 72 842 264 are: