It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 016 998 is not a prime number.
For example, 42 016 998 can be divided by 2: 42 016 998 / 2 = 21 008 499.
For 42 016 998 to be a prime number, it would have been required that 42 016 998 has only two divisors, i.e., itself and 1.
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42 016 998 is an even number, because it is evenly divisible by 2: 42 016 998 / 2 = 21 008 499.
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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 42 016 998 is about 6 482.052.
Thus, the square root of 42 016 998 is not an integer, and therefore 42 016 998 is not a square number.
The square of a number (here 42 016 998) is the result of the product of this number (42 016 998) by itself (i.e., 42 016 998 × 42 016 998); the square of 42 016 998 is sometimes called "raising 42 016 998 to the power 2", or "42 016 998 squared".
The square of 42 016 998 is 1 765 428 120 932 004 because 42 016 998 × 42 016 998 = 42 016 9982 = 1 765 428 120 932 004.
As a consequence, 42 016 998 is the square root of 1 765 428 120 932 004.
42 016 998 is a number with 8 digits.
The multiples of 42 016 998 are all integers evenly divisible by 42 016 998, that is all numbers such that the remainder of the division by 42 016 998 is zero. There are infinitely many multiples of 42 016 998. The smallest multiples of 42 016 998 are: