It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 342 121 is not a prime number.
For example, 342 121 can be divided by 13: 342 121 / 13 = 26 317.
For 342 121 to be a prime number, it would have been required that 342 121 has only two divisors, i.e., itself and 1.
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342 121 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 342 121 is about 584.911.
Thus, the square root of 342 121 is not an integer, and therefore 342 121 is not a square number.
The square of a number (here 342 121) is the result of the product of this number (342 121) by itself (i.e., 342 121 × 342 121); the square of 342 121 is sometimes called "raising 342 121 to the power 2", or "342 121 squared".
The square of 342 121 is 117 046 778 641 because 342 121 × 342 121 = 342 1212 = 117 046 778 641.
As a consequence, 342 121 is the square root of 117 046 778 641.
The multiples of 342 121 are all integers evenly divisible by 342 121, that is all numbers such that the remainder of the division by 342 121 is zero. There are infinitely many multiples of 342 121. The smallest multiples of 342 121 are: