It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 424 is not a prime number.
For example, 120 424 can be divided by 2: 120 424 / 2 = 60 212.
For 120 424 to be a prime number, it would have been required that 120 424 has only two divisors, i.e., itself and 1.
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120 424 is an even number, because it is evenly divisible by 2: 120 424 / 2 = 60 212.
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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 120 424 is about 347.022.
Thus, the square root of 120 424 is not an integer, and therefore 120 424 is not a square number.
The square of a number (here 120 424) is the result of the product of this number (120 424) by itself (i.e., 120 424 × 120 424); the square of 120 424 is sometimes called "raising 120 424 to the power 2", or "120 424 squared".
The square of 120 424 is 14 501 939 776 because 120 424 × 120 424 = 120 4242 = 14 501 939 776.
As a consequence, 120 424 is the square root of 14 501 939 776.
The multiples of 120 424 are all integers evenly divisible by 120 424, that is all numbers such that the remainder of the division by 120 424 is zero. There are infinitely many multiples of 120 424. The smallest multiples of 120 424 are: