It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 242 401 is not a prime number.
For example, 242 401 can be divided by 223: 242 401 / 223 = 1 087.
For 242 401 to be a prime number, it would have been required that 242 401 has only two divisors, i.e., itself and 1.
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242 401 is an odd number, because it is not evenly divisible by 2.
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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 242 401 is about 492.342.
Thus, the square root of 242 401 is not an integer, and therefore 242 401 is not a square number.
The square of a number (here 242 401) is the result of the product of this number (242 401) by itself (i.e., 242 401 × 242 401); the square of 242 401 is sometimes called "raising 242 401 to the power 2", or "242 401 squared".
The square of 242 401 is 58 758 244 801 because 242 401 × 242 401 = 242 4012 = 58 758 244 801.
As a consequence, 242 401 is the square root of 58 758 244 801.
The multiples of 242 401 are all integers evenly divisible by 242 401, that is all numbers such that the remainder of the division by 242 401 is zero. There are infinitely many multiples of 242 401. The smallest multiples of 242 401 are: