It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 160 842 is not a prime number.
For example, 160 842 can be divided by 2: 160 842 / 2 = 80 421.
For 160 842 to be a prime number, it would have been required that 160 842 has only two divisors, i.e., itself and 1.
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160 842 is an even number, because it is evenly divisible by 2: 160 842 / 2 = 80 421.
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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 160 842 is about 401.051.
Thus, the square root of 160 842 is not an integer, and therefore 160 842 is not a square number.
The square of a number (here 160 842) is the result of the product of this number (160 842) by itself (i.e., 160 842 × 160 842); the square of 160 842 is sometimes called "raising 160 842 to the power 2", or "160 842 squared".
The square of 160 842 is 25 870 148 964 because 160 842 × 160 842 = 160 8422 = 25 870 148 964.
As a consequence, 160 842 is the square root of 25 870 148 964.
The multiples of 160 842 are all integers evenly divisible by 160 842, that is all numbers such that the remainder of the division by 160 842 is zero. There are infinitely many multiples of 160 842. The smallest multiples of 160 842 are: