Is 42840913 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 42 840 913 is a prime number.
Indeed, the definition of a prime numbers is to have exactly two distinct positive divisors, 1 and itself. A number is a divisor of another number when the remainder of Euclid’s division of the second one by the first one is zero. Concerning the number 42 840 913, the only two divisors are 1 and 42 840 913. Therefore 42 840 913 is a prime number.
As a consequence, 42 840 913 is only a multiple of 1 and 42 840 913.
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Since 42840913 is a prime number, 42840913 is also a deficient number, that is to say 42840913 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 42840913 without 42840913 itself (that is 1, by definition!).