111233142 has 32 divisors (see below), whose sum is σ = 261727200. Its totient is φ = 34896384.

The previous prime is 111233117. The next prime is 111233149. The reversal of 111233142 is 241332111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111233149) 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, 59667 + ... + 61502.

It is an arithmetic number, because the mean of its divisors is an integer number (8178975).

Almost surely, 2^111233142 is an apocalyptic number.

111233142 is an abundant number, since it is smaller than the sum of its proper divisors (150494058).

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

111233142 is a wasteful number, since it uses less digits than its factorization.

111233142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121197 (or 121191 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 111233142 is about 10546.7123787463. The cubic root of 111233142 is about 480.9257913735.

Adding to 111233142 its reverse (241332111), we get a palindrome (352565253).

The spelling of 111233142 in words is "one hundred eleven million, two hundred thirty-three thousand, one hundred forty-two".