111423000 has 128 divisors (see below), whose sum is σ = 374512320. Its totient is φ = 27417600.

The previous prime is 111422977. The next prime is 111423007. The reversal of 111423000 is 324111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111423007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37572 + ... + 40428.

Almost surely, 2^111423000 is an apocalyptic number.

111423000 is a gapful number since it is divisible by the number (10) 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 111423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187256160).

111423000 is an abundant number, since it is smaller than the sum of its proper divisors (263089320).

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

111423000 is a wasteful number, since it uses less digits than its factorization.

111423000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894 (or 2880 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 111423000 is about 10555.7093556047. The cubic root of 111423000 is about 481.1992581571.

Adding to 111423000 its reverse (324111), we get a palindrome (111747111).

The spelling of 111423000 in words is "one hundred eleven million, four hundred twenty-three thousand".