It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 421 232 is not a prime number.
For example, 421 232 can be divided by 2: 421 232 / 2 = 210 616.
For 421 232 to be a prime number, it would have been required that 421 232 has only two divisors, i.e., itself and 1.
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421 232 is an even number, because it is evenly divisible by 2: 421 232 / 2 = 210 616.
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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 421 232 is about 649.024.
Thus, the square root of 421 232 is not an integer, and therefore 421 232 is not a square number.
The square of a number (here 421 232) is the result of the product of this number (421 232) by itself (i.e., 421 232 × 421 232); the square of 421 232 is sometimes called "raising 421 232 to the power 2", or "421 232 squared".
The square of 421 232 is 177 436 397 824 because 421 232 × 421 232 = 421 2322 = 177 436 397 824.
As a consequence, 421 232 is the square root of 177 436 397 824.
The multiples of 421 232 are all integers evenly divisible by 421 232, that is all numbers such that the remainder of the division by 421 232 is zero. There are infinitely many multiples of 421 232. The smallest multiples of 421 232 are: