It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 609 278 is not a prime number.
For example, 120 609 278 can be divided by 2: 120 609 278 / 2 = 60 304 639.
For 120 609 278 to be a prime number, it would have been required that 120 609 278 has only two divisors, i.e., itself and 1.
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120 609 278 is an even number, because it is evenly divisible by 2: 120 609 278 / 2 = 60 304 639.
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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 120 609 278 is about 10 982.226.
Thus, the square root of 120 609 278 is not an integer, and therefore 120 609 278 is not a square number.
The square of a number (here 120 609 278) is the result of the product of this number (120 609 278) by itself (i.e., 120 609 278 × 120 609 278); the square of 120 609 278 is sometimes called "raising 120 609 278 to the power 2", or "120 609 278 squared".
The square of 120 609 278 is 14 546 597 939 681 284 because 120 609 278 × 120 609 278 = 120 609 2782 = 14 546 597 939 681 284.
As a consequence, 120 609 278 is the square root of 14 546 597 939 681 284.
120 609 278 is a number with 9 digits.
The multiples of 120 609 278 are all integers evenly divisible by 120 609 278, that is all numbers such that the remainder of the division by 120 609 278 is zero. There are infinitely many multiples of 120 609 278. The smallest multiples of 120 609 278 are: