It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 348 is not a prime number.
For example, 42 348 can be divided by 2: 42 348 / 2 = 21 174.
For 42 348 to be a prime number, it would have been required that 42 348 has only two divisors, i.e., itself and 1.
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42 348 is an even number, because it is evenly divisible by 2: 42 348 / 2 = 21 174.
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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 42 348 is about 205.786.
Thus, the square root of 42 348 is not an integer, and therefore 42 348 is not a square number.
The square of a number (here 42 348) is the result of the product of this number (42 348) by itself (i.e., 42 348 × 42 348); the square of 42 348 is sometimes called "raising 42 348 to the power 2", or "42 348 squared".
The square of 42 348 is 1 793 353 104 because 42 348 × 42 348 = 42 3482 = 1 793 353 104.
As a consequence, 42 348 is the square root of 1 793 353 104.
The multiples of 42 348 are all integers evenly divisible by 42 348, that is all numbers such that the remainder of the division by 42 348 is zero. There are infinitely many multiples of 42 348. The smallest multiples of 42 348 are: