It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 140 988 is not a prime number.
For example, 140 988 can be divided by 2: 140 988 / 2 = 70 494.
For 140 988 to be a prime number, it would have been required that 140 988 has only two divisors, i.e., itself and 1.
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140 988 is an even number, because it is evenly divisible by 2: 140 988 / 2 = 70 494.
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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 140 988 is about 375.484.
Thus, the square root of 140 988 is not an integer, and therefore 140 988 is not a square number.
The square of a number (here 140 988) is the result of the product of this number (140 988) by itself (i.e., 140 988 × 140 988); the square of 140 988 is sometimes called "raising 140 988 to the power 2", or "140 988 squared".
The square of 140 988 is 19 877 616 144 because 140 988 × 140 988 = 140 9882 = 19 877 616 144.
As a consequence, 140 988 is the square root of 19 877 616 144.
The multiples of 140 988 are all integers evenly divisible by 140 988, that is all numbers such that the remainder of the division by 140 988 is zero. There are infinitely many multiples of 140 988. The smallest multiples of 140 988 are: