It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 109 309 is not a prime number.
For example, 42 109 309 can be divided by 11: 42 109 309 / 11 = 3 828 119.
For 42 109 309 to be a prime number, it would have been required that 42 109 309 has only two divisors, i.e., itself and 1.
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42 109 309 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 42 109 309 is about 6 489.169.
Thus, the square root of 42 109 309 is not an integer, and therefore 42 109 309 is not a square number.
The square of a number (here 42 109 309) is the result of the product of this number (42 109 309) by itself (i.e., 42 109 309 × 42 109 309); the square of 42 109 309 is sometimes called "raising 42 109 309 to the power 2", or "42 109 309 squared".
The square of 42 109 309 is 1 773 193 904 457 481 because 42 109 309 × 42 109 309 = 42 109 3092 = 1 773 193 904 457 481.
As a consequence, 42 109 309 is the square root of 1 773 193 904 457 481.
42 109 309 is a number with 8 digits.
The multiples of 42 109 309 are all integers evenly divisible by 42 109 309, that is all numbers such that the remainder of the division by 42 109 309 is zero. There are infinitely many multiples of 42 109 309. The smallest multiples of 42 109 309 are: