It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 249 942 is not a prime number.
For example, 42 249 942 can be divided by 2: 42 249 942 / 2 = 21 124 971.
For 42 249 942 to be a prime number, it would have been required that 42 249 942 has only two divisors, i.e., itself and 1.
Find out more:
42 249 942 is an even number, because it is evenly divisible by 2: 42 249 942 / 2 = 21 124 971.
Find out more:
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 42 249 942 is about 6 499.996.
Thus, the square root of 42 249 942 is not an integer, and therefore 42 249 942 is not a square number.
The square of a number (here 42 249 942) is the result of the product of this number (42 249 942) by itself (i.e., 42 249 942 × 42 249 942); the square of 42 249 942 is sometimes called "raising 42 249 942 to the power 2", or "42 249 942 squared".
The square of 42 249 942 is 1 785 057 599 003 364 because 42 249 942 × 42 249 942 = 42 249 9422 = 1 785 057 599 003 364.
As a consequence, 42 249 942 is the square root of 1 785 057 599 003 364.
42 249 942 is a number with 8 digits.
The multiples of 42 249 942 are all integers evenly divisible by 42 249 942, that is all numbers such that the remainder of the division by 42 249 942 is zero. There are infinitely many multiples of 42 249 942. The smallest multiples of 42 249 942 are: