It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 121 042 is not a prime number.
For example, 121 042 can be divided by 2: 121 042 / 2 = 60 521.
For 121 042 to be a prime number, it would have been required that 121 042 has only two divisors, i.e., itself and 1.
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121 042 is an even number, because it is evenly divisible by 2: 121 042 / 2 = 60 521.
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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 121 042 is about 347.911.
Thus, the square root of 121 042 is not an integer, and therefore 121 042 is not a square number.
The square of a number (here 121 042) is the result of the product of this number (121 042) by itself (i.e., 121 042 × 121 042); the square of 121 042 is sometimes called "raising 121 042 to the power 2", or "121 042 squared".
The square of 121 042 is 14 651 165 764 because 121 042 × 121 042 = 121 0422 = 14 651 165 764.
As a consequence, 121 042 is the square root of 14 651 165 764.
The multiples of 121 042 are all integers evenly divisible by 121 042, that is all numbers such that the remainder of the division by 121 042 is zero. There are infinitely many multiples of 121 042. The smallest multiples of 121 042 are: