42240044400 has 60 divisors (see below), whose sum is σ = 135308946072. Its totient is φ = 11264011520.

The previous prime is 42240044339. The next prime is 42240044401. The reversal of 42240044400 is 444004224.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240044401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17598819 + ... + 17601218.

Almost surely, 2^42240044400 is an apocalyptic number.

42240044400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42240044400 is an abundant number, since it is smaller than the sum of its proper divisors (93068901672).

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

42240044400 is a wasteful number, since it uses less digits than its factorization.

42240044400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35200058 (or 35200047 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 42240044400 its reverse (444004224), we get a palindrome (42684048624).

The spelling of 42240044400 in words is "forty-two billion, two hundred forty million, forty-four thousand, four hundred".