111080142 has 48 divisors (see below), whose sum is σ = 261744912. Its totient is φ = 33903360.

The previous prime is 111080131. The next prime is 111080147. The reversal of 111080142 is 241080111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111080147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6417 + ... + 16227.

It is an arithmetic number, because the mean of its divisors is an integer number (5453019).

Almost surely, 2^111080142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111080142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130872456).

111080142 is an abundant number, since it is smaller than the sum of its proper divisors (150664770).

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

111080142 is a wasteful number, since it uses less digits than its factorization.

111080142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9873 (or 9870 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 111080142 is about 10539.4564375968. The cubic root of 111080142 is about 480.7051874316.

The spelling of 111080142 in words is "one hundred eleven million, eighty thousand, one hundred forty-two".