It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 424 238 is not a prime number.
For example, 424 238 can be divided by 2: 424 238 / 2 = 212 119.
For 424 238 to be a prime number, it would have been required that 424 238 has only two divisors, i.e., itself and 1.
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424 238 is an even number, because it is evenly divisible by 2: 424 238 / 2 = 212 119.
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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 424 238 is about 651.336.
Thus, the square root of 424 238 is not an integer, and therefore 424 238 is not a square number.
The square of a number (here 424 238) is the result of the product of this number (424 238) by itself (i.e., 424 238 × 424 238); the square of 424 238 is sometimes called "raising 424 238 to the power 2", or "424 238 squared".
The square of 424 238 is 179 977 880 644 because 424 238 × 424 238 = 424 2382 = 179 977 880 644.
As a consequence, 424 238 is the square root of 179 977 880 644.
The multiples of 424 238 are all integers evenly divisible by 424 238, that is all numbers such that the remainder of the division by 424 238 is zero. There are infinitely many multiples of 424 238. The smallest multiples of 424 238 are: