It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 238 421 is not a prime number.
For example, 238 421 can be divided by 31: 238 421 / 31 = 7 691.
For 238 421 to be a prime number, it would have been required that 238 421 has only two divisors, i.e., itself and 1.
Find out more:
238 421 is an odd number, because it is not evenly divisible by 2.
Find out more:
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 238 421 is about 488.284.
Thus, the square root of 238 421 is not an integer, and therefore 238 421 is not a square number.
The square of a number (here 238 421) is the result of the product of this number (238 421) by itself (i.e., 238 421 × 238 421); the square of 238 421 is sometimes called "raising 238 421 to the power 2", or "238 421 squared".
The square of 238 421 is 56 844 573 241 because 238 421 × 238 421 = 238 4212 = 56 844 573 241.
As a consequence, 238 421 is the square root of 56 844 573 241.
The multiples of 238 421 are all integers evenly divisible by 238 421, that is all numbers such that the remainder of the division by 238 421 is zero. There are infinitely many multiples of 238 421. The smallest multiples of 238 421 are: