It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 342 429 is not a prime number.
For example, 342 429 can be divided by 3: 342 429 / 3 = 114 143.
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For 342 429 to be a prime number, it would have been required that 342 429 has only two divisors, i.e., itself and 1.
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342 429 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 342 429 is about 585.174.
Thus, the square root of 342 429 is not an integer, and therefore 342 429 is not a square number.
The square of a number (here 342 429) is the result of the product of this number (342 429) by itself (i.e., 342 429 × 342 429); the square of 342 429 is sometimes called "raising 342 429 to the power 2", or "342 429 squared".
The square of 342 429 is 117 257 620 041 because 342 429 × 342 429 = 342 4292 = 117 257 620 041.
As a consequence, 342 429 is the square root of 117 257 620 041.
The multiples of 342 429 are all integers evenly divisible by 342 429, that is all numbers such that the remainder of the division by 342 429 is zero. There are infinitely many multiples of 342 429. The smallest multiples of 342 429 are: