111144042 has 16 divisors (see below), whose sum is σ = 246986880. Its totient is φ = 37047996.

The previous prime is 111143999. The next prime is 111144067. The reversal of 111144042 is 240441111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029058 + ... + 1029165.

It is an arithmetic number, because the mean of its divisors is an integer number (15436680).

Almost surely, 2^111144042 is an apocalyptic number.

111144042 is an abundant number, since it is smaller than the sum of its proper divisors (135842838).

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

111144042 is a wasteful number, since it uses less digits than its factorization.

111144042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058234 (or 2058228 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 111144042 is about 10542.4874673864. The cubic root of 111144042 is about 480.7973466381.

Adding to 111144042 its reverse (240441111), we get a palindrome (351585153).

The spelling of 111144042 in words is "one hundred eleven million, one hundred forty-four thousand, forty-two".