It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 167 642 is not a prime number.
For example, 167 642 can be divided by 2: 167 642 / 2 = 83 821.
For 167 642 to be a prime number, it would have been required that 167 642 has only two divisors, i.e., itself and 1.
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167 642 is an even number, because it is evenly divisible by 2: 167 642 / 2 = 83 821.
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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 167 642 is about 409.441.
Thus, the square root of 167 642 is not an integer, and therefore 167 642 is not a square number.
The square of a number (here 167 642) is the result of the product of this number (167 642) by itself (i.e., 167 642 × 167 642); the square of 167 642 is sometimes called "raising 167 642 to the power 2", or "167 642 squared".
The square of 167 642 is 28 103 840 164 because 167 642 × 167 642 = 167 6422 = 28 103 840 164.
As a consequence, 167 642 is the square root of 28 103 840 164.
The multiples of 167 642 are all integers evenly divisible by 167 642, that is all numbers such that the remainder of the division by 167 642 is zero. There are infinitely many multiples of 167 642. The smallest multiples of 167 642 are: