111391842 has 32 divisors (see below), whose sum is σ = 231696000. Its totient is φ = 35659008.

The previous prime is 111391807. The next prime is 111391853. The reversal of 111391842 is 248193111.

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 15 ways as a sum of consecutive naturals, for example, 33018 + ... + 36234.

It is an arithmetic number, because the mean of its divisors is an integer number (7240500).

Almost surely, 2^111391842 is an apocalyptic number.

111391842 is an abundant number, since it is smaller than the sum of its proper divisors (120304158).

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

111391842 is a wasteful number, since it uses less digits than its factorization.

111391842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450.

The product of its digits is 1728, while the sum is 30.

The square root of 111391842 is about 10554.2333686535. The cubic root of 111391842 is about 481.1544002605.

The spelling of 111391842 in words is "one hundred eleven million, three hundred ninety-one thousand, eight hundred forty-two".