It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 842 413 is not a prime number.
For example, 842 413 can be divided by 11: 842 413 / 11 = 76 583.
For 842 413 to be a prime number, it would have been required that 842 413 has only two divisors, i.e., itself and 1.
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842 413 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 842 413 is about 917.831.
Thus, the square root of 842 413 is not an integer, and therefore 842 413 is not a square number.
The square of a number (here 842 413) is the result of the product of this number (842 413) by itself (i.e., 842 413 × 842 413); the square of 842 413 is sometimes called "raising 842 413 to the power 2", or "842 413 squared".
The square of 842 413 is 709 659 662 569 because 842 413 × 842 413 = 842 4132 = 709 659 662 569.
As a consequence, 842 413 is the square root of 709 659 662 569.
The multiples of 842 413 are all integers evenly divisible by 842 413, that is all numbers such that the remainder of the division by 842 413 is zero. There are infinitely many multiples of 842 413. The smallest multiples of 842 413 are: