It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 40 055 138 is not a prime number.
For example, 40 055 138 can be divided by 2: 40 055 138 / 2 = 20 027 569.
For 40 055 138 to be a prime number, it would have been required that 40 055 138 has only two divisors, i.e., itself and 1.
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40 055 138 is an even number, because it is evenly divisible by 2: 40 055 138 / 2 = 20 027 569.
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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 40 055 138 is about 6 328.913.
Thus, the square root of 40 055 138 is not an integer, and therefore 40 055 138 is not a square number.
The square of a number (here 40 055 138) is the result of the product of this number (40 055 138) by itself (i.e., 40 055 138 × 40 055 138); the square of 40 055 138 is sometimes called "raising 40 055 138 to the power 2", or "40 055 138 squared".
The square of 40 055 138 is 1 604 414 080 199 044 because 40 055 138 × 40 055 138 = 40 055 1382 = 1 604 414 080 199 044.
As a consequence, 40 055 138 is the square root of 1 604 414 080 199 044.
40 055 138 is a number with 8 digits.
The multiples of 40 055 138 are all integers evenly divisible by 40 055 138, that is all numbers such that the remainder of the division by 40 055 138 is zero. There are infinitely many multiples of 40 055 138. The smallest multiples of 40 055 138 are: