It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 166 402 342 is not a prime number.
For example, 166 402 342 can be divided by 2: 166 402 342 / 2 = 83 201 171.
For 166 402 342 to be a prime number, it would have been required that 166 402 342 has only two divisors, i.e., itself and 1.
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166 402 342 is an even number, because it is evenly divisible by 2: 166 402 342 / 2 = 83 201 171.
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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 166 402 342 is about 12 899.703.
Thus, the square root of 166 402 342 is not an integer, and therefore 166 402 342 is not a square number.
The square of a number (here 166 402 342) is the result of the product of this number (166 402 342) by itself (i.e., 166 402 342 × 166 402 342); the square of 166 402 342 is sometimes called "raising 166 402 342 to the power 2", or "166 402 342 squared".
The square of 166 402 342 is 27 689 739 423 084 964 because 166 402 342 × 166 402 342 = 166 402 3422 = 27 689 739 423 084 964.
As a consequence, 166 402 342 is the square root of 27 689 739 423 084 964.
166 402 342 is a number with 9 digits.
The multiples of 166 402 342 are all integers evenly divisible by 166 402 342, that is all numbers such that the remainder of the division by 166 402 342 is zero. There are infinitely many multiples of 166 402 342. The smallest multiples of 166 402 342 are: