It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 38 442 is not a prime number.
For example, 38 442 can be divided by 2: 38 442 / 2 = 19 221.
For 38 442 to be a prime number, it would have been required that 38 442 has only two divisors, i.e., itself and 1.
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38 442 is an even number, because it is evenly divisible by 2: 38 442 / 2 = 19 221.
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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 38 442 is about 196.066.
Thus, the square root of 38 442 is not an integer, and therefore 38 442 is not a square number.
The square of a number (here 38 442) is the result of the product of this number (38 442) by itself (i.e., 38 442 × 38 442); the square of 38 442 is sometimes called "raising 38 442 to the power 2", or "38 442 squared".
The square of 38 442 is 1 477 787 364 because 38 442 × 38 442 = 38 4422 = 1 477 787 364.
As a consequence, 38 442 is the square root of 1 477 787 364.
The multiples of 38 442 are all integers evenly divisible by 38 442, that is all numbers such that the remainder of the division by 38 442 is zero. There are infinitely many multiples of 38 442. The smallest multiples of 38 442 are: