111321042 has 48 divisors (see below), whose sum is σ = 262688832. Its totient is φ = 31352160.

The previous prime is 111320999. The next prime is 111321047. The reversal of 111321042 is 240123111.

It is not an unprimeable number, because it can be changed into a prime (111321047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18208 + ... + 23540.

It is an arithmetic number, because the mean of its divisors is an integer number (5472684).

Almost surely, 2^111321042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111321042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131344416).

111321042 is an abundant number, since it is smaller than the sum of its proper divisors (151367790).

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

111321042 is a wasteful number, since it uses less digits than its factorization.

111321042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423 (or 5416 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 111321042 is about 10550.8787311768. The cubic root of 111321042 is about 481.0524390193.

Adding to 111321042 its reverse (240123111), we get a palindrome (351444153).

It can be divided in two parts, 1113 and 21042, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 111321042 in words is "one hundred eleven million, three hundred twenty-one thousand, forty-two".