111605442 has 48 divisors (see below), whose sum is σ = 255404352. Its totient is φ = 32313600.

The previous prime is 111605419. The next prime is 111605447. The reversal of 111605442 is 244506111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111605447) 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, 20067 + ... + 25017.

It is an arithmetic number, because the mean of its divisors is an integer number (5320924).

Almost surely, 2^111605442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111605442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127702176).

111605442 is an abundant number, since it is smaller than the sum of its proper divisors (143798910).

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

111605442 is a wasteful number, since it uses less digits than its factorization.

111605442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003 (or 4986 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 111605442 is about 10564.3476845473. The cubic root of 111605442 is about 481.4617505894.

The spelling of 111605442 in words is "one hundred eleven million, six hundred five thousand, four hundred forty-two".