42005050521 has 24 divisors (see below), whose sum is σ = 65191301280. Its totient is φ = 23987924352.

The previous prime is 42005050517. The next prime is 42005050547. The reversal of 42005050521 is 12505050024.

It is a happy number.

42005050521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42005050521 - 2² = 42005050517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42005050491 and 42005050500.

It is not an unprimeable number, because it can be changed into a prime (42005050501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149745 + ... + 326241.

It is an arithmetic number, because the mean of its divisors is an integer number (2716304220).

Almost surely, 2^42005050521 is an apocalyptic number.

It is an amenable number.

42005050521 is a deficient number, since it is larger than the sum of its proper divisors (23186250759).

42005050521 is a wasteful number, since it uses less digits than its factorization.

42005050521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178133 (or 178126 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The spelling of 42005050521 in words is "forty-two billion, five million, fifty thousand, five hundred twenty-one".