It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 402 604 077 is not a prime number.
For example, 402 604 077 can be divided by 3: 402 604 077 / 3 = 134 201 359.
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For 402 604 077 to be a prime number, it would have been required that 402 604 077 has only two divisors, i.e., itself and 1.
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402 604 077 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 402 604 077 is about 20 064.996.
Thus, the square root of 402 604 077 is not an integer, and therefore 402 604 077 is not a square number.
The square of a number (here 402 604 077) is the result of the product of this number (402 604 077) by itself (i.e., 402 604 077 × 402 604 077); the square of 402 604 077 is sometimes called "raising 402 604 077 to the power 2", or "402 604 077 squared".
The square of 402 604 077 is 162 090 042 817 021 920 because 402 604 077 × 402 604 077 = 402 604 0772 = 162 090 042 817 021 920.
As a consequence, 402 604 077 is the square root of 162 090 042 817 021 920.
402 604 077 is a number with 9 digits.
The multiples of 402 604 077 are all integers evenly divisible by 402 604 077, that is all numbers such that the remainder of the division by 402 604 077 is zero. There are infinitely many multiples of 402 604 077. The smallest multiples of 402 604 077 are: