It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 164 742 is not a prime number.
For example, 164 742 can be divided by 2: 164 742 / 2 = 82 371.
For 164 742 to be a prime number, it would have been required that 164 742 has only two divisors, i.e., itself and 1.
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164 742 is an even number, because it is evenly divisible by 2: 164 742 / 2 = 82 371.
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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 164 742 is about 405.884.
Thus, the square root of 164 742 is not an integer, and therefore 164 742 is not a square number.
The square of a number (here 164 742) is the result of the product of this number (164 742) by itself (i.e., 164 742 × 164 742); the square of 164 742 is sometimes called "raising 164 742 to the power 2", or "164 742 squared".
The square of 164 742 is 27 139 926 564 because 164 742 × 164 742 = 164 7422 = 27 139 926 564.
As a consequence, 164 742 is the square root of 27 139 926 564.
The multiples of 164 742 are all integers evenly divisible by 164 742, that is all numbers such that the remainder of the division by 164 742 is zero. There are infinitely many multiples of 164 742. The smallest multiples of 164 742 are: