42042220444 has 48 divisors (see below), whose sum is σ = 88942307328. Its totient is φ = 16998588288.

The previous prime is 42042220439. The next prime is 42042220457. The reversal of 42042220444 is 44402224024.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400132 + ... + 494155.

It is an arithmetic number, because the mean of its divisors is an integer number (1852964736).

Almost surely, 2^42042220444 is an apocalyptic number.

It is an amenable number.

42042220444 is an abundant number, since it is smaller than the sum of its proper divisors (46900086884).

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

42042220444 is a wasteful number, since it uses less digits than its factorization.

42042220444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894394 (or 894392 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 42042220444 its reverse (44402224024), we get a palindrome (86444444468).

The spelling of 42042220444 in words is "forty-two billion, forty-two million, two hundred twenty thousand, four hundred forty-four".