Is 42785467 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 42 785 467 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 42 785 467, the only two divisors are 1 and 42 785 467. Therefore 42 785 467 is a prime number.
As a consequence, 42 785 467 is only a multiple of 1 and 42 785 467.
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Since 42785467 is a prime number, 42785467 is also a deficient number, that is to say 42785467 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 42785467 without 42785467 itself (that is 1, by definition!).