It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 676 409 is not a prime number.
For example, 42 676 409 can be divided by 17: 42 676 409 / 17 = 2 510 377.
For 42 676 409 to be a prime number, it would have been required that 42 676 409 has only two divisors, i.e., itself and 1.
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42 676 409 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 42 676 409 is about 6 532.718.
Thus, the square root of 42 676 409 is not an integer, and therefore 42 676 409 is not a square number.
The square of a number (here 42 676 409) is the result of the product of this number (42 676 409) by itself (i.e., 42 676 409 × 42 676 409); the square of 42 676 409 is sometimes called "raising 42 676 409 to the power 2", or "42 676 409 squared".
The square of 42 676 409 is 1 821 275 885 135 281 because 42 676 409 × 42 676 409 = 42 676 4092 = 1 821 275 885 135 281.
As a consequence, 42 676 409 is the square root of 1 821 275 885 135 281.
42 676 409 is a number with 8 digits.
The multiples of 42 676 409 are all integers evenly divisible by 42 676 409, that is all numbers such that the remainder of the division by 42 676 409 is zero. There are infinitely many multiples of 42 676 409. The smallest multiples of 42 676 409 are: