42440743956 has 96 divisors (see below), whose sum is σ = 107249788800. Its totient is φ = 12984975360.

The previous prime is 42440743931. The next prime is 42440743957. The reversal of 42440743956 is 65934704424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440743957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33709255 + ... + 33710513.

It is an arithmetic number, because the mean of its divisors is an integer number (1117185300).

Almost surely, 2^42440743956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42440743956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53624894400).

42440743956 is an abundant number, since it is smaller than the sum of its proper divisors (64809044844).

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

42440743956 is a wasteful number, since it uses less digits than its factorization.

42440743956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 42440743956 in words is "forty-two billion, four hundred forty million, seven hundred forty-three thousand, nine hundred fifty-six".