111242142042 has 64 divisors (see below), whose sum is σ = 228435240960. Its totient is φ = 36097858944.

The previous prime is 111242142041. The next prime is 111242142103. The reversal of 111242142042 is 240241242111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111242142041) 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, 64562193 + ... + 64563915.

It is an arithmetic number, because the mean of its divisors is an integer number (3569300640).

Almost surely, 2^111242142042 is an apocalyptic number.

111242142042 is an abundant number, since it is smaller than the sum of its proper divisors (117193098918).

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

111242142042 is a wasteful number, since it uses less digits than its factorization.

111242142042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 111242142042 its reverse (240241242111), we get a palindrome (351483384153).

The spelling of 111242142042 in words is "one hundred eleven billion, two hundred forty-two million, one hundred forty-two thousand, forty-two".