42418518481 has 4 divisors (see below), whose sum is σ = 42418976832. Its totient is φ = 42418060132.

The previous prime is 42418518397. The next prime is 42418518487. The reversal of 42418518481 is 18481581424.

42418518481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42418518481 - 2¹⁵ = 42418485713 is a prime.

It is a super-2 number, since 2×42418518481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42418518487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36181 + ... + 293506.

It is an arithmetic number, because the mean of its divisors is an integer number (10604744208).

Almost surely, 2^42418518481 is an apocalyptic number.

It is an amenable number.

42418518481 is a deficient number, since it is larger than the sum of its proper divisors (458351).

42418518481 is a wasteful number, since it uses less digits than its factorization.

42418518481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458350.

The product of its digits is 327680, while the sum is 46.

The spelling of 42418518481 in words is "forty-two billion, four hundred eighteen million, five hundred eighteen thousand, four hundred eighty-one".