42442244861 has 4 divisors (see below), whose sum is σ = 42442667232. Its totient is φ = 42441822492.

The previous prime is 42442244857. The next prime is 42442244899. The reversal of 42442244861 is 16844224424.

It is a happy number.

42442244861 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 42442244861 - 2² = 42442244857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442244851) 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, 35930 + ... + 293556.

It is an arithmetic number, because the mean of its divisors is an integer number (10610666808).

Almost surely, 2^42442244861 is an apocalyptic number.

It is an amenable number.

42442244861 is a deficient number, since it is larger than the sum of its proper divisors (422371).

42442244861 is a wasteful number, since it uses less digits than its factorization.

42442244861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422370.

The product of its digits is 393216, while the sum is 41.

The spelling of 42442244861 in words is "forty-two billion, four hundred forty-two million, two hundred forty-four thousand, eight hundred sixty-one".