It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 912 509 is not a prime number.
For example, 42 912 509 can be divided by 97: 42 912 509 / 97 = 442 397.
For 42 912 509 to be a prime number, it would have been required that 42 912 509 has only two divisors, i.e., itself and 1.
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42 912 509 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 42 912 509 is about 6 550.764.
Thus, the square root of 42 912 509 is not an integer, and therefore 42 912 509 is not a square number.
The square of a number (here 42 912 509) is the result of the product of this number (42 912 509) by itself (i.e., 42 912 509 × 42 912 509); the square of 42 912 509 is sometimes called "raising 42 912 509 to the power 2", or "42 912 509 squared".
The square of 42 912 509 is 1 841 483 428 675 081 because 42 912 509 × 42 912 509 = 42 912 5092 = 1 841 483 428 675 081.
As a consequence, 42 912 509 is the square root of 1 841 483 428 675 081.
42 912 509 is a number with 8 digits.
The multiples of 42 912 509 are all integers evenly divisible by 42 912 509, that is all numbers such that the remainder of the division by 42 912 509 is zero. There are infinitely many multiples of 42 912 509. The smallest multiples of 42 912 509 are: