It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 73 402 is not a prime number.
For example, 73 402 can be divided by 2: 73 402 / 2 = 36 701.
For 73 402 to be a prime number, it would have been required that 73 402 has only two divisors, i.e., itself and 1.
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73 402 is an even number, because it is evenly divisible by 2: 73 402 / 2 = 36 701.
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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 73 402 is about 270.928.
Thus, the square root of 73 402 is not an integer, and therefore 73 402 is not a square number.
The square of a number (here 73 402) is the result of the product of this number (73 402) by itself (i.e., 73 402 × 73 402); the square of 73 402 is sometimes called "raising 73 402 to the power 2", or "73 402 squared".
The square of 73 402 is 5 387 853 604 because 73 402 × 73 402 = 73 4022 = 5 387 853 604.
As a consequence, 73 402 is the square root of 5 387 853 604.
The multiples of 73 402 are all integers evenly divisible by 73 402, that is all numbers such that the remainder of the division by 73 402 is zero. There are infinitely many multiples of 73 402. The smallest multiples of 73 402 are: