It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 124 042 is not a prime number.
For example, 124 042 can be divided by 2: 124 042 / 2 = 62 021.
For 124 042 to be a prime number, it would have been required that 124 042 has only two divisors, i.e., itself and 1.
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124 042 is an even number, because it is evenly divisible by 2: 124 042 / 2 = 62 021.
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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 124 042 is about 352.196.
Thus, the square root of 124 042 is not an integer, and therefore 124 042 is not a square number.
The square of a number (here 124 042) is the result of the product of this number (124 042) by itself (i.e., 124 042 × 124 042); the square of 124 042 is sometimes called "raising 124 042 to the power 2", or "124 042 squared".
The square of 124 042 is 15 386 417 764 because 124 042 × 124 042 = 124 0422 = 15 386 417 764.
As a consequence, 124 042 is the square root of 15 386 417 764.
The multiples of 124 042 are all integers evenly divisible by 124 042, that is all numbers such that the remainder of the division by 124 042 is zero. There are infinitely many multiples of 124 042. The smallest multiples of 124 042 are: