11040042012 has 96 divisors (see below), whose sum is σ = 27535334400. Its totient is φ = 3430702080.

The previous prime is 11040041989. The next prime is 11040042037. The reversal of 11040042012 is 21024004011.

It is a junction number, because it is equal to n+sod(n) for n = 11040041982 and 11040042000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18430489 + ... + 18431087.

It is an arithmetic number, because the mean of its divisors is an integer number (286826400).

Almost surely, 2^11040042012 is an apocalyptic number.

11040042012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11040042012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13767667200).

11040042012 is an abundant number, since it is smaller than the sum of its proper divisors (16495292388).

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

11040042012 is a wasteful number, since it uses less digits than its factorization.

11040042012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11040042012 its reverse (21024004011), we get a palindrome (32064046023).

The spelling of 11040042012 in words is "eleven billion, forty million, forty-two thousand, twelve".