It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 267 342 is not a prime number.
For example, 267 342 can be divided by 2: 267 342 / 2 = 133 671.
For 267 342 to be a prime number, it would have been required that 267 342 has only two divisors, i.e., itself and 1.
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267 342 is an even number, because it is evenly divisible by 2: 267 342 / 2 = 133 671.
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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 267 342 is about 517.051.
Thus, the square root of 267 342 is not an integer, and therefore 267 342 is not a square number.
The square of a number (here 267 342) is the result of the product of this number (267 342) by itself (i.e., 267 342 × 267 342); the square of 267 342 is sometimes called "raising 267 342 to the power 2", or "267 342 squared".
The square of 267 342 is 71 471 744 964 because 267 342 × 267 342 = 267 3422 = 71 471 744 964.
As a consequence, 267 342 is the square root of 71 471 744 964.
The multiples of 267 342 are all integers evenly divisible by 267 342, that is all numbers such that the remainder of the division by 267 342 is zero. There are infinitely many multiples of 267 342. The smallest multiples of 267 342 are: