It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 542 016 016 is not a prime number.
For example, 542 016 016 can be divided by 2: 542 016 016 / 2 = 271 008 008.
For 542 016 016 to be a prime number, it would have been required that 542 016 016 has only two divisors, i.e., itself and 1.
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542 016 016 is an even number, because it is evenly divisible by 2: 542 016 016 / 2 = 271 008 008.
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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 542 016 016 is about 23 281.237.
Thus, the square root of 542 016 016 is not an integer, and therefore 542 016 016 is not a square number.
The square of a number (here 542 016 016) is the result of the product of this number (542 016 016) by itself (i.e., 542 016 016 × 542 016 016); the square of 542 016 016 is sometimes called "raising 542 016 016 to the power 2", or "542 016 016 squared".
The square of 542 016 016 is 293 781 361 600 512 256 because 542 016 016 × 542 016 016 = 542 016 0162 = 293 781 361 600 512 256.
As a consequence, 542 016 016 is the square root of 293 781 361 600 512 256.
542 016 016 is a number with 9 digits.
The multiples of 542 016 016 are all integers evenly divisible by 542 016 016, that is all numbers such that the remainder of the division by 542 016 016 is zero. There are infinitely many multiples of 542 016 016. The smallest multiples of 542 016 016 are: