404021112 has 64 divisors (see below), whose sum is σ = 1107250560. Its totient is φ = 121833600.

The previous prime is 404021087. The next prime is 404021119. The reversal of 404021112 is 211120404.

It is a junction number, because it is equal to n+sod(n) for n = 404021091 and 404021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404021119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52078 + ... + 59330.

It is an arithmetic number, because the mean of its divisors is an integer number (17300790).

Almost surely, 2^404021112 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 404021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553625280).

404021112 is an abundant number, since it is smaller than the sum of its proper divisors (703229448).

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

404021112 is a wasteful number, since it uses less digits than its factorization.

404021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7484 (or 7480 counting only the distinct ones).

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

The square root of 404021112 is about 20100.2764160098. The cubic root of 404021112 is about 739.2670561205.

Adding to 404021112 its reverse (211120404), we get a palindrome (615141516).

It can be divided in two parts, 40402 and 1112, that added together give a palindrome (41514).

The spelling of 404021112 in words is "four hundred four million, twenty-one thousand, one hundred twelve".