111131142 has 64 divisors (see below), whose sum is σ = 244430784. Its totient is φ = 33546240.

The previous prime is 111131131. The next prime is 111131149. The reversal of 111131142 is 241131111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111131149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329598 + ... + 329934.

It is an arithmetic number, because the mean of its divisors is an integer number (3819231).

Almost surely, 2^111131142 is an apocalyptic number.

111131142 is an abundant number, since it is smaller than the sum of its proper divisors (133299642).

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

111131142 is a wasteful number, since it uses less digits than its factorization.

111131142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its digits is 24, while the sum is 15.

The square root of 111131142 is about 10541.8756395624. The cubic root of 111131142 is about 480.7787445742.

Adding to 111131142 its reverse (241131111), we get a palindrome (352262253).

The spelling of 111131142 in words is "one hundred eleven million, one hundred thirty-one thousand, one hundred forty-two".