It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 478 is not a prime number.
For example, 120 478 can be divided by 2: 120 478 / 2 = 60 239.
For 120 478 to be a prime number, it would have been required that 120 478 has only two divisors, i.e., itself and 1.
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120 478 is an even number, because it is evenly divisible by 2: 120 478 / 2 = 60 239.
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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 120 478 is about 347.099.
Thus, the square root of 120 478 is not an integer, and therefore 120 478 is not a square number.
The square of a number (here 120 478) is the result of the product of this number (120 478) by itself (i.e., 120 478 × 120 478); the square of 120 478 is sometimes called "raising 120 478 to the power 2", or "120 478 squared".
The square of 120 478 is 14 514 948 484 because 120 478 × 120 478 = 120 4782 = 14 514 948 484.
As a consequence, 120 478 is the square root of 14 514 948 484.
The multiples of 120 478 are all integers evenly divisible by 120 478, that is all numbers such that the remainder of the division by 120 478 is zero. There are infinitely many multiples of 120 478. The smallest multiples of 120 478 are: