111042423 has 6 divisors (see below), whose sum is σ = 160394624. Its totient is φ = 74028276.

The previous prime is 111042401. The next prime is 111042427. The reversal of 111042423 is 324240111.

It is not a de Polignac number, because 111042423 - 2⁶ = 111042359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111042396 and 111042405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111042427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6169015 + ... + 6169032.

Almost surely, 2^111042423 is an apocalyptic number.

111042423 is a deficient number, since it is larger than the sum of its proper divisors (49352201).

111042423 is a wasteful number, since it uses less digits than its factorization.

111042423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12338053 (or 12338050 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 111042423 is about 10537.6668670062. Note that the first 3 decimals coincide. The cubic root of 111042423 is about 480.6507709495.

Adding to 111042423 its reverse (324240111), we get a palindrome (435282534).

The spelling of 111042423 in words is "one hundred eleven million, forty-two thousand, four hundred twenty-three".