It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 120 164 is not a prime number.
For example, 42 120 164 can be divided by 2: 42 120 164 / 2 = 21 060 082.
For 42 120 164 to be a prime number, it would have been required that 42 120 164 has only two divisors, i.e., itself and 1.
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42 120 164 is an even number, because it is evenly divisible by 2: 42 120 164 / 2 = 21 060 082.
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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 42 120 164 is about 6 490.005.
Thus, the square root of 42 120 164 is not an integer, and therefore 42 120 164 is not a square number.
The square of a number (here 42 120 164) is the result of the product of this number (42 120 164) by itself (i.e., 42 120 164 × 42 120 164); the square of 42 120 164 is sometimes called "raising 42 120 164 to the power 2", or "42 120 164 squared".
The square of 42 120 164 is 1 774 108 215 386 896 because 42 120 164 × 42 120 164 = 42 120 1642 = 1 774 108 215 386 896.
As a consequence, 42 120 164 is the square root of 1 774 108 215 386 896.
42 120 164 is a number with 8 digits.
The multiples of 42 120 164 are all integers evenly divisible by 42 120 164, that is all numbers such that the remainder of the division by 42 120 164 is zero. There are infinitely many multiples of 42 120 164. The smallest multiples of 42 120 164 are: