111423424 has 112 divisors (see below), whose sum is σ = 266858496. Its totient is φ = 45158400.

The previous prime is 111423421. The next prime is 111423463. The reversal of 111423424 is 424324111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 111423395 and 111423404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111423421) 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, 985992 + ... + 986104.

Almost surely, 2^111423424 is an apocalyptic number.

111423424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111423424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133429248).

111423424 is an abundant number, since it is smaller than the sum of its proper divisors (155435072).

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

111423424 is a wasteful number, since it uses less digits than its factorization.

111423424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 224 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 111423424 is about 10555.7294395035. The cubic root of 111423424 is about 481.1998685285.

Adding to 111423424 its reverse (424324111), we get a palindrome (535747535).

The spelling of 111423424 in words is "one hundred eleven million, four hundred twenty-three thousand, four hundred twenty-four".