It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 201 402 is not a prime number.
For example, 201 402 can be divided by 2: 201 402 / 2 = 100 701.
For 201 402 to be a prime number, it would have been required that 201 402 has only two divisors, i.e., itself and 1.
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201 402 is an even number, because it is evenly divisible by 2: 201 402 / 2 = 100 701.
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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 201 402 is about 448.778.
Thus, the square root of 201 402 is not an integer, and therefore 201 402 is not a square number.
The square of a number (here 201 402) is the result of the product of this number (201 402) by itself (i.e., 201 402 × 201 402); the square of 201 402 is sometimes called "raising 201 402 to the power 2", or "201 402 squared".
The square of 201 402 is 40 562 765 604 because 201 402 × 201 402 = 201 4022 = 40 562 765 604.
As a consequence, 201 402 is the square root of 40 562 765 604.
The multiples of 201 402 are all integers evenly divisible by 201 402, that is all numbers such that the remainder of the division by 201 402 is zero. There are infinitely many multiples of 201 402. The smallest multiples of 201 402 are: