42044004020 has 24 divisors (see below), whose sum is σ = 88296977664. Its totient is φ = 16816731296.

The previous prime is 42044004007. The next prime is 42044004043. The reversal of 42044004020 is 2040044024.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 42044003983 and 42044004001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460709 + ... + 544371.

It is an arithmetic number, because the mean of its divisors is an integer number (3679040736).

Almost surely, 2^42044004020 is an apocalyptic number.

It is an amenable number.

42044004020 is an abundant number, since it is smaller than the sum of its proper divisors (46252973644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42044004020 is a wasteful number, since it uses less digits than its factorization.

42044004020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108799 (or 108797 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 42044004020 its reverse (2040044024), we get a palindrome (44084048044).

The spelling of 42044004020 in words is "forty-two billion, forty-four million, four thousand, twenty".