It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 211 009 is not a prime number.
For example, 42 211 009 can be divided by 73: 42 211 009 / 73 = 578 233.
For 42 211 009 to be a prime number, it would have been required that 42 211 009 has only two divisors, i.e., itself and 1.
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42 211 009 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 42 211 009 is 6 497.
Therefore, the square root of 42 211 009 is an integer, and as a consequence 42 211 009 is a perfect square.
As a consequence, 6 497 is the square root of 42 211 009.
The square of a number (here 42 211 009) is the result of the product of this number (42 211 009) by itself (i.e., 42 211 009 × 42 211 009); the square of 42 211 009 is sometimes called "raising 42 211 009 to the power 2", or "42 211 009 squared".
The square of 42 211 009 is 1 781 769 280 798 081 because 42 211 009 × 42 211 009 = 42 211 0092 = 1 781 769 280 798 081.
As a consequence, 42 211 009 is the square root of 1 781 769 280 798 081.
42 211 009 is a number with 8 digits.
The multiples of 42 211 009 are all integers evenly divisible by 42 211 009, that is all numbers such that the remainder of the division by 42 211 009 is zero. There are infinitely many multiples of 42 211 009. The smallest multiples of 42 211 009 are: