It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 801 262 is not a prime number.
For example, 801 262 can be divided by 2: 801 262 / 2 = 400 631.
For 801 262 to be a prime number, it would have been required that 801 262 has only two divisors, i.e., itself and 1.
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801 262 is an even number, because it is evenly divisible by 2: 801 262 / 2 = 400 631.
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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 801 262 is about 895.132.
Thus, the square root of 801 262 is not an integer, and therefore 801 262 is not a square number.
The square of a number (here 801 262) is the result of the product of this number (801 262) by itself (i.e., 801 262 × 801 262); the square of 801 262 is sometimes called "raising 801 262 to the power 2", or "801 262 squared".
The square of 801 262 is 642 020 792 644 because 801 262 × 801 262 = 801 2622 = 642 020 792 644.
As a consequence, 801 262 is the square root of 642 020 792 644.
The multiples of 801 262 are all integers evenly divisible by 801 262, that is all numbers such that the remainder of the division by 801 262 is zero. There are infinitely many multiples of 801 262. The smallest multiples of 801 262 are: