111243834 has 64 divisors (see below), whose sum is σ = 268894080. Its totient is φ = 33886080.

The previous prime is 111243833. The next prime is 111243871. The reversal of 111243834 is 438342111.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111243798 and 111243807.

It is not an unprimeable number, because it can be changed into a prime (111243833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74374 + ... + 75854.

It is an arithmetic number, because the mean of its divisors is an integer number (4201470).

Almost surely, 2^111243834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111243834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134447040).

111243834 is an abundant number, since it is smaller than the sum of its proper divisors (157650246).

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

111243834 is a wasteful number, since it uses less digits than its factorization.

111243834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612 (or 1606 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 111243834 is about 10547.2192543817. The cubic root of 111243834 is about 480.9412001319.

Adding to 111243834 its reverse (438342111), we get a palindrome (549585945).

The spelling of 111243834 in words is "one hundred eleven million, two hundred forty-three thousand, eight hundred thirty-four".