It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 267 402 is not a prime number.
For example, 267 402 can be divided by 2: 267 402 / 2 = 133 701.
For 267 402 to be a prime number, it would have been required that 267 402 has only two divisors, i.e., itself and 1.
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267 402 is an even number, because it is evenly divisible by 2: 267 402 / 2 = 133 701.
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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 267 402 is about 517.109.
Thus, the square root of 267 402 is not an integer, and therefore 267 402 is not a square number.
The square of a number (here 267 402) is the result of the product of this number (267 402) by itself (i.e., 267 402 × 267 402); the square of 267 402 is sometimes called "raising 267 402 to the power 2", or "267 402 squared".
The square of 267 402 is 71 503 829 604 because 267 402 × 267 402 = 267 4022 = 71 503 829 604.
As a consequence, 267 402 is the square root of 71 503 829 604.
The multiples of 267 402 are all integers evenly divisible by 267 402, that is all numbers such that the remainder of the division by 267 402 is zero. There are infinitely many multiples of 267 402. The smallest multiples of 267 402 are: