It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 438 948 is not a prime number.
For example, 42 438 948 can be divided by 2: 42 438 948 / 2 = 21 219 474.
For 42 438 948 to be a prime number, it would have been required that 42 438 948 has only two divisors, i.e., itself and 1.
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42 438 948 is an even number, because it is evenly divisible by 2: 42 438 948 / 2 = 21 219 474.
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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 42 438 948 is about 6 514.518.
Thus, the square root of 42 438 948 is not an integer, and therefore 42 438 948 is not a square number.
The square of a number (here 42 438 948) is the result of the product of this number (42 438 948) by itself (i.e., 42 438 948 × 42 438 948); the square of 42 438 948 is sometimes called "raising 42 438 948 to the power 2", or "42 438 948 squared".
The square of 42 438 948 is 1 801 064 307 346 704 because 42 438 948 × 42 438 948 = 42 438 9482 = 1 801 064 307 346 704.
As a consequence, 42 438 948 is the square root of 1 801 064 307 346 704.
42 438 948 is a number with 8 digits.
The multiples of 42 438 948 are all integers evenly divisible by 42 438 948, that is all numbers such that the remainder of the division by 42 438 948 is zero. There are infinitely many multiples of 42 438 948. The smallest multiples of 42 438 948 are: