111666842 has 8 divisors (see below), whose sum is σ = 191428896. Its totient is φ = 47857212.

The previous prime is 111666839. The next prime is 111666853. The reversal of 111666842 is 248666111.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3988088 + ... + 3988115.

It is an arithmetic number, because the mean of its divisors is an integer number (23928612).

Almost surely, 2^111666842 is an apocalyptic number.

111666842 is a deficient number, since it is larger than the sum of its proper divisors (79762054).

111666842 is an equidigital number, since it uses as much as digits as its factorization.

111666842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976212.

The product of its digits is 13824, while the sum is 35.

The square root of 111666842 is about 10567.2532855042. The cubic root of 111666842 is about 481.5500268462.

The spelling of 111666842 in words is "one hundred eleven million, six hundred sixty-six thousand, eight hundred forty-two".