Is 40221481 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 40 221 481 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 40 221 481, the only two divisors are 1 and 40 221 481. Therefore 40 221 481 is a prime number.
As a consequence, 40 221 481 is only a multiple of 1 and 40 221 481.
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Since 40221481 is a prime number, 40221481 is also a deficient number, that is to say 40221481 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 40221481 without 40221481 itself (that is 1, by definition!).