Is 42485473 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 42 485 473 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 42 485 473, the only two divisors are 1 and 42 485 473. Therefore 42 485 473 is a prime number.
As a consequence, 42 485 473 is only a multiple of 1 and 42 485 473.
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Since 42485473 is a prime number, 42485473 is also a deficient number, that is to say 42485473 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 42485473 without 42485473 itself (that is 1, by definition!).