It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 542 016 009 is not a prime number.
For example, 542 016 009 can be divided by 3: 542 016 009 / 3 = 180 672 003.
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For 542 016 009 to be a prime number, it would have been required that 542 016 009 has only two divisors, i.e., itself and 1.
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542 016 009 is an odd number, because it is not evenly divisible by 2.
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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 542 016 009 is about 23 281.237.
Thus, the square root of 542 016 009 is not an integer, and therefore 542 016 009 is not a square number.
The square of a number (here 542 016 009) is the result of the product of this number (542 016 009) by itself (i.e., 542 016 009 × 542 016 009); the square of 542 016 009 is sometimes called "raising 542 016 009 to the power 2", or "542 016 009 squared".
The square of 542 016 009 is 293 781 354 012 288 064 because 542 016 009 × 542 016 009 = 542 016 0092 = 293 781 354 012 288 064.
As a consequence, 542 016 009 is the square root of 293 781 354 012 288 064.
542 016 009 is a number with 9 digits.
The multiples of 542 016 009 are all integers evenly divisible by 542 016 009, that is all numbers such that the remainder of the division by 542 016 009 is zero. There are infinitely many multiples of 542 016 009. The smallest multiples of 542 016 009 are: