111172242 has 8 divisors (see below), whose sum is σ = 222344496. Its totient is φ = 37057412.

The previous prime is 111172223. The next prime is 111172247. The reversal of 111172242 is 242271111.

It is a sphenic number, since it is the product of 3 distinct primes.

111172242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (111172247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9264348 + ... + 9264359.

It is an arithmetic number, because the mean of its divisors is an integer number (27793062).

Almost surely, 2^111172242 is an apocalyptic number.

111172242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111172242 is a wasteful number, since it uses less digits than its factorization.

111172242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18528712.

The product of its digits is 224, while the sum is 21.

The square root of 111172242 is about 10543.8248278317. The cubic root of 111172242 is about 480.8380066033.

The spelling of 111172242 in words is "one hundred eleven million, one hundred seventy-two thousand, two hundred forty-two".