111432442042 has 4 divisors (see below), whose sum is σ = 167148663066. Its totient is φ = 55716221020.

The previous prime is 111432442013. The next prime is 111432442073. The reversal of 111432442042 is 240244234111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98262813961 + 13169628081 = 313469^2 + 114759^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111432442042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27858110509 + ... + 27858110512.

Almost surely, 2^111432442042 is an apocalyptic number.

111432442042 is a deficient number, since it is larger than the sum of its proper divisors (55716221024).

111432442042 is an equidigital number, since it uses as much as digits as its factorization.

111432442042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55716221023.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 111432442042 its reverse (240244234111), we get a palindrome (351676676153).

The spelling of 111432442042 in words is "one hundred eleven billion, four hundred thirty-two million, four hundred forty-two thousand, forty-two".