It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 427 018 is not a prime number.
For example, 427 018 can be divided by 2: 427 018 / 2 = 213 509.
For 427 018 to be a prime number, it would have been required that 427 018 has only two divisors, i.e., itself and 1.
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427 018 is an even number, because it is evenly divisible by 2: 427 018 / 2 = 213 509.
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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 427 018 is about 653.466.
Thus, the square root of 427 018 is not an integer, and therefore 427 018 is not a square number.
The square of a number (here 427 018) is the result of the product of this number (427 018) by itself (i.e., 427 018 × 427 018); the square of 427 018 is sometimes called "raising 427 018 to the power 2", or "427 018 squared".
The square of 427 018 is 182 344 372 324 because 427 018 × 427 018 = 427 0182 = 182 344 372 324.
As a consequence, 427 018 is the square root of 182 344 372 324.
The multiples of 427 018 are all integers evenly divisible by 427 018, that is all numbers such that the remainder of the division by 427 018 is zero. There are infinitely many multiples of 427 018. The smallest multiples of 427 018 are: