It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 564 is not a prime number.
For example, 120 564 can be divided by 2: 120 564 / 2 = 60 282.
For 120 564 to be a prime number, it would have been required that 120 564 has only two divisors, i.e., itself and 1.
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120 564 is an even number, because it is evenly divisible by 2: 120 564 / 2 = 60 282.
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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 120 564 is about 347.223.
Thus, the square root of 120 564 is not an integer, and therefore 120 564 is not a square number.
The square of a number (here 120 564) is the result of the product of this number (120 564) by itself (i.e., 120 564 × 120 564); the square of 120 564 is sometimes called "raising 120 564 to the power 2", or "120 564 squared".
The square of 120 564 is 14 535 678 096 because 120 564 × 120 564 = 120 5642 = 14 535 678 096.
As a consequence, 120 564 is the square root of 14 535 678 096.
The multiples of 120 564 are all integers evenly divisible by 120 564, that is all numbers such that the remainder of the division by 120 564 is zero. There are infinitely many multiples of 120 564. The smallest multiples of 120 564 are: