It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 120 013 is not a prime number.
For example, 120 013 can be divided by 43: 120 013 / 43 = 2 791.
For 120 013 to be a prime number, it would have been required that 120 013 has only two divisors, i.e., itself and 1.
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120 013 is an odd number, because it is not evenly divisible by 2.
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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 120 013 is about 346.429.
Thus, the square root of 120 013 is not an integer, and therefore 120 013 is not a square number.
The square of a number (here 120 013) is the result of the product of this number (120 013) by itself (i.e., 120 013 × 120 013); the square of 120 013 is sometimes called "raising 120 013 to the power 2", or "120 013 squared".
The square of 120 013 is 14 403 120 169 because 120 013 × 120 013 = 120 0132 = 14 403 120 169.
As a consequence, 120 013 is the square root of 14 403 120 169.
The multiples of 120 013 are all integers evenly divisible by 120 013, that is all numbers such that the remainder of the division by 120 013 is zero. There are infinitely many multiples of 120 013. The smallest multiples of 120 013 are: