Is 42840937 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 42 840 937 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 42 840 937, the only two divisors are 1 and 42 840 937. Therefore 42 840 937 is a prime number.
As a consequence, 42 840 937 is only a multiple of 1 and 42 840 937.
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Since 42840937 is a prime number, 42840937 is also a deficient number, that is to say 42840937 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 42840937 without 42840937 itself (that is 1, by definition!).