It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 195 742 is not a prime number.
For example, 195 742 can be divided by 2: 195 742 / 2 = 97 871.
For 195 742 to be a prime number, it would have been required that 195 742 has only two divisors, i.e., itself and 1.
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195 742 is an even number, because it is evenly divisible by 2: 195 742 / 2 = 97 871.
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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 195 742 is about 442.427.
Thus, the square root of 195 742 is not an integer, and therefore 195 742 is not a square number.
The square of a number (here 195 742) is the result of the product of this number (195 742) by itself (i.e., 195 742 × 195 742); the square of 195 742 is sometimes called "raising 195 742 to the power 2", or "195 742 squared".
The square of 195 742 is 38 314 930 564 because 195 742 × 195 742 = 195 7422 = 38 314 930 564.
As a consequence, 195 742 is the square root of 38 314 930 564.
The multiples of 195 742 are all integers evenly divisible by 195 742, that is all numbers such that the remainder of the division by 195 742 is zero. There are infinitely many multiples of 195 742. The smallest multiples of 195 742 are: