It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 841 609 is not a prime number.
For example, 42 841 609 can be divided by 67: 42 841 609 / 67 = 639 427.
For 42 841 609 to be a prime number, it would have been required that 42 841 609 has only two divisors, i.e., itself and 1.
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42 841 609 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 42 841 609 is about 6 545.350.
Thus, the square root of 42 841 609 is not an integer, and therefore 42 841 609 is not a square number.
The square of a number (here 42 841 609) is the result of the product of this number (42 841 609) by itself (i.e., 42 841 609 × 42 841 609); the square of 42 841 609 is sometimes called "raising 42 841 609 to the power 2", or "42 841 609 squared".
The square of 42 841 609 is 1 835 403 461 708 881 because 42 841 609 × 42 841 609 = 42 841 6092 = 1 835 403 461 708 881.
As a consequence, 42 841 609 is the square root of 1 835 403 461 708 881.
42 841 609 is a number with 8 digits.
The multiples of 42 841 609 are all integers evenly divisible by 42 841 609, that is all numbers such that the remainder of the division by 42 841 609 is zero. There are infinitely many multiples of 42 841 609. The smallest multiples of 42 841 609 are: