It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 789 007 is not a prime number.
For example, 42 789 007 can be divided by 19: 42 789 007 / 19 = 2 252 053.
For 42 789 007 to be a prime number, it would have been required that 42 789 007 has only two divisors, i.e., itself and 1.
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42 789 007 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 42 789 007 is about 6 541.331.
Thus, the square root of 42 789 007 is not an integer, and therefore 42 789 007 is not a square number.
The square of a number (here 42 789 007) is the result of the product of this number (42 789 007) by itself (i.e., 42 789 007 × 42 789 007); the square of 42 789 007 is sometimes called "raising 42 789 007 to the power 2", or "42 789 007 squared".
The square of 42 789 007 is 1 830 899 120 046 049 because 42 789 007 × 42 789 007 = 42 789 0072 = 1 830 899 120 046 049.
As a consequence, 42 789 007 is the square root of 1 830 899 120 046 049.
42 789 007 is a number with 8 digits.
The multiples of 42 789 007 are all integers evenly divisible by 42 789 007, that is all numbers such that the remainder of the division by 42 789 007 is zero. There are infinitely many multiples of 42 789 007. The smallest multiples of 42 789 007 are: