111442604 has 48 divisors (see below), whose sum is σ = 241334016. Its totient is φ = 43848000.

The previous prime is 111442589. The next prime is 111442609. The reversal of 111442604 is 406244111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111442604.

It is not an unprimeable number, because it can be changed into a prime (111442609) 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, 76079 + ... + 77529.

It is an arithmetic number, because the mean of its divisors is an integer number (5027792).

Almost surely, 2^111442604 is an apocalyptic number.

111442604 is a gapful number since it is divisible by the number (14) 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 111442604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120667008).

111442604 is an abundant number, since it is smaller than the sum of its proper divisors (129891412).

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

111442604 is a wasteful number, since it uses less digits than its factorization.

111442604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 111442604 is about 10556.6379117596. The cubic root of 111442604 is about 481.2274775764.

Adding to 111442604 its reverse (406244111), we get a palindrome (517686715).

The spelling of 111442604 in words is "one hundred eleven million, four hundred forty-two thousand, six hundred four".