111170142 has 12 divisors (see below), whose sum is σ = 240868680. Its totient is φ = 37056708.

The previous prime is 111170141. The next prime is 111170149. The reversal of 111170142 is 241071111.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6176119 = 111170142 / (1 + 1 + 1 + 1 + 7 + 0 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111170141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3088042 + ... + 3088077.

It is an arithmetic number, because the mean of its divisors is an integer number (20072390).

Almost surely, 2^111170142 is an apocalyptic number.

111170142 is an abundant number, since it is smaller than the sum of its proper divisors (129698538).

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

111170142 is a wasteful number, since it uses less digits than its factorization.

111170142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6176127 (or 6176124 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 111170142 is about 10543.7252430059. The cubic root of 111170142 is about 480.8349789705.

It can be divided in two parts, 1111 and 70142, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 111170142 in words is "one hundred eleven million, one hundred seventy thousand, one hundred forty-two".