It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 124 802 is not a prime number.
For example, 124 802 can be divided by 2: 124 802 / 2 = 62 401.
For 124 802 to be a prime number, it would have been required that 124 802 has only two divisors, i.e., itself and 1.
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124 802 is an even number, because it is evenly divisible by 2: 124 802 / 2 = 62 401.
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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 124 802 is about 353.273.
Thus, the square root of 124 802 is not an integer, and therefore 124 802 is not a square number.
The square of a number (here 124 802) is the result of the product of this number (124 802) by itself (i.e., 124 802 × 124 802); the square of 124 802 is sometimes called "raising 124 802 to the power 2", or "124 802 squared".
The square of 124 802 is 15 575 539 204 because 124 802 × 124 802 = 124 8022 = 15 575 539 204.
As a consequence, 124 802 is the square root of 15 575 539 204.
The multiples of 124 802 are all integers evenly divisible by 124 802, that is all numbers such that the remainder of the division by 124 802 is zero. There are infinitely many multiples of 124 802. The smallest multiples of 124 802 are: