It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 142 420 422 is not a prime number.
For example, 142 420 422 can be divided by 2: 142 420 422 / 2 = 71 210 211.
For 142 420 422 to be a prime number, it would have been required that 142 420 422 has only two divisors, i.e., itself and 1.
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142 420 422 is an even number, because it is evenly divisible by 2: 142 420 422 / 2 = 71 210 211.
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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 142 420 422 is about 11 934.003.
Thus, the square root of 142 420 422 is not an integer, and therefore 142 420 422 is not a square number.
The square of a number (here 142 420 422) is the result of the product of this number (142 420 422) by itself (i.e., 142 420 422 × 142 420 422); the square of 142 420 422 is sometimes called "raising 142 420 422 to the power 2", or "142 420 422 squared".
The square of 142 420 422 is 20 283 576 602 658 084 because 142 420 422 × 142 420 422 = 142 420 4222 = 20 283 576 602 658 084.
As a consequence, 142 420 422 is the square root of 20 283 576 602 658 084.
142 420 422 is a number with 9 digits.
The multiples of 142 420 422 are all integers evenly divisible by 142 420 422, that is all numbers such that the remainder of the division by 142 420 422 is zero. There are infinitely many multiples of 142 420 422. The smallest multiples of 142 420 422 are: