It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 67 442 is not a prime number.
For example, 67 442 can be divided by 2: 67 442 / 2 = 33 721.
For 67 442 to be a prime number, it would have been required that 67 442 has only two divisors, i.e., itself and 1.
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67 442 is an even number, because it is evenly divisible by 2: 67 442 / 2 = 33 721.
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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 67 442 is about 259.696.
Thus, the square root of 67 442 is not an integer, and therefore 67 442 is not a square number.
The square of a number (here 67 442) is the result of the product of this number (67 442) by itself (i.e., 67 442 × 67 442); the square of 67 442 is sometimes called "raising 67 442 to the power 2", or "67 442 squared".
The square of 67 442 is 4 548 423 364 because 67 442 × 67 442 = 67 4422 = 4 548 423 364.
As a consequence, 67 442 is the square root of 4 548 423 364.
The multiples of 67 442 are all integers evenly divisible by 67 442, that is all numbers such that the remainder of the division by 67 442 is zero. There are infinitely many multiples of 67 442. The smallest multiples of 67 442 are: