It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 158 008 842 is not a prime number.
For example, 158 008 842 can be divided by 2: 158 008 842 / 2 = 79 004 421.
For 158 008 842 to be a prime number, it would have been required that 158 008 842 has only two divisors, i.e., itself and 1.
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158 008 842 is an even number, because it is evenly divisible by 2: 158 008 842 / 2 = 79 004 421.
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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 158 008 842 is about 12 570.157.
Thus, the square root of 158 008 842 is not an integer, and therefore 158 008 842 is not a square number.
The square of a number (here 158 008 842) is the result of the product of this number (158 008 842) by itself (i.e., 158 008 842 × 158 008 842); the square of 158 008 842 is sometimes called "raising 158 008 842 to the power 2", or "158 008 842 squared".
The square of 158 008 842 is 24 966 794 150 180 964 because 158 008 842 × 158 008 842 = 158 008 8422 = 24 966 794 150 180 964.
As a consequence, 158 008 842 is the square root of 24 966 794 150 180 964.
158 008 842 is a number with 9 digits.
The multiples of 158 008 842 are all integers evenly divisible by 158 008 842, that is all numbers such that the remainder of the division by 158 008 842 is zero. There are infinitely many multiples of 158 008 842. The smallest multiples of 158 008 842 are: