It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 209 671 is not a prime number.
For example, 42 209 671 can be divided by 7: 42 209 671 / 7 = 6 029 953.
For 42 209 671 to be a prime number, it would have been required that 42 209 671 has only two divisors, i.e., itself and 1.
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42 209 671 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 42 209 671 is about 6 496.897.
Thus, the square root of 42 209 671 is not an integer, and therefore 42 209 671 is not a square number.
The square of a number (here 42 209 671) is the result of the product of this number (42 209 671) by itself (i.e., 42 209 671 × 42 209 671); the square of 42 209 671 is sometimes called "raising 42 209 671 to the power 2", or "42 209 671 squared".
The square of 42 209 671 is 1 781 656 325 928 241 because 42 209 671 × 42 209 671 = 42 209 6712 = 1 781 656 325 928 241.
As a consequence, 42 209 671 is the square root of 1 781 656 325 928 241.
42 209 671 is a number with 8 digits.
The multiples of 42 209 671 are all integers evenly divisible by 42 209 671, that is all numbers such that the remainder of the division by 42 209 671 is zero. There are infinitely many multiples of 42 209 671. The smallest multiples of 42 209 671 are: