It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 120 069 is not a prime number.
For example, 42 120 069 can be divided by 3: 42 120 069 / 3 = 14 040 023.
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For 42 120 069 to be a prime number, it would have been required that 42 120 069 has only two divisors, i.e., itself and 1.
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42 120 069 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 42 120 069 is about 6 489.998.
Thus, the square root of 42 120 069 is not an integer, and therefore 42 120 069 is not a square number.
The square of a number (here 42 120 069) is the result of the product of this number (42 120 069) by itself (i.e., 42 120 069 × 42 120 069); the square of 42 120 069 is sometimes called "raising 42 120 069 to the power 2", or "42 120 069 squared".
The square of 42 120 069 is 1 774 100 212 564 761 because 42 120 069 × 42 120 069 = 42 120 0692 = 1 774 100 212 564 761.
As a consequence, 42 120 069 is the square root of 1 774 100 212 564 761.
42 120 069 is a number with 8 digits.
The multiples of 42 120 069 are all integers evenly divisible by 42 120 069, that is all numbers such that the remainder of the division by 42 120 069 is zero. There are infinitely many multiples of 42 120 069. The smallest multiples of 42 120 069 are: