It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 142 241 is not a prime number.
For example, 142 241 can be divided by 11: 142 241 / 11 = 12 931.
For 142 241 to be a prime number, it would have been required that 142 241 has only two divisors, i.e., itself and 1.
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142 241 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 142 241 is about 377.149.
Thus, the square root of 142 241 is not an integer, and therefore 142 241 is not a square number.
The square of a number (here 142 241) is the result of the product of this number (142 241) by itself (i.e., 142 241 × 142 241); the square of 142 241 is sometimes called "raising 142 241 to the power 2", or "142 241 squared".
The square of 142 241 is 20 232 502 081 because 142 241 × 142 241 = 142 2412 = 20 232 502 081.
As a consequence, 142 241 is the square root of 20 232 502 081.
The multiples of 142 241 are all integers evenly divisible by 142 241, that is all numbers such that the remainder of the division by 142 241 is zero. There are infinitely many multiples of 142 241. The smallest multiples of 142 241 are: