42021541641 has 4 divisors (see below), whose sum is σ = 56028722192. Its totient is φ = 28014361092.

The previous prime is 42021541619. The next prime is 42021541697. The reversal of 42021541641 is 14614512024.

42021541641 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.

It is not a de Polignac number, because 42021541641 - 2¹⁷ = 42021410569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42021541599 and 42021541608.

It is not an unprimeable number, because it can be changed into a prime (42021541141) 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, 7003590271 + ... + 7003590276.

It is an arithmetic number, because the mean of its divisors is an integer number (14007180548).

Almost surely, 2^42021541641 is an apocalyptic number.

It is an amenable number.

42021541641 is a deficient number, since it is larger than the sum of its proper divisors (14007180551).

42021541641 is a wasteful number, since it uses less digits than its factorization.

42021541641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14007180550.

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 42021541641 in words is "forty-two billion, twenty-one million, five hundred forty-one thousand, six hundred forty-one".