It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 37 842 is not a prime number.
For example, 37 842 can be divided by 2: 37 842 / 2 = 18 921.
For 37 842 to be a prime number, it would have been required that 37 842 has only two divisors, i.e., itself and 1.
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37 842 is an even number, because it is evenly divisible by 2: 37 842 / 2 = 18 921.
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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 37 842 is about 194.530.
Thus, the square root of 37 842 is not an integer, and therefore 37 842 is not a square number.
The square of a number (here 37 842) is the result of the product of this number (37 842) by itself (i.e., 37 842 × 37 842); the square of 37 842 is sometimes called "raising 37 842 to the power 2", or "37 842 squared".
The square of 37 842 is 1 432 016 964 because 37 842 × 37 842 = 37 8422 = 1 432 016 964.
As a consequence, 37 842 is the square root of 1 432 016 964.
The multiples of 37 842 are all integers evenly divisible by 37 842, that is all numbers such that the remainder of the division by 37 842 is zero. There are infinitely many multiples of 37 842. The smallest multiples of 37 842 are: