40100120440 has 32 divisors (see below), whose sum is σ = 90298676160. Its totient is φ = 16026998400.

The previous prime is 40100120351. The next prime is 40100120453. The reversal of 40100120440 is 4402100104.

40100120440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 357951 + ... + 456430.

It is an arithmetic number, because the mean of its divisors is an integer number (2821833630).

Almost surely, 2^40100120440 is an apocalyptic number.

40100120440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40100120440 is an abundant number, since it is smaller than the sum of its proper divisors (50198555720).

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

40100120440 is a wasteful number, since it uses less digits than its factorization.

40100120440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815623 (or 815619 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 40100120440 its reverse (4402100104), we get a palindrome (44502220544).

The spelling of 40100120440 in words is "forty billion, one hundred million, one hundred twenty thousand, four hundred forty".