111442542 has 8 divisors (see below), whose sum is σ = 222885096. Its totient is φ = 37147512.

The previous prime is 111442519. The next prime is 111442549. The reversal of 111442542 is 245244111.

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

111442542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111442549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9286873 + ... + 9286884.

It is an arithmetic number, because the mean of its divisors is an integer number (27860637).

Almost surely, 2^111442542 is an apocalyptic number.

111442542 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.

111442542 is a wasteful number, since it uses less digits than its factorization.

111442542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18573762.

The product of its digits is 1280, while the sum is 24.

The square root of 111442542 is about 10556.6349752182. The cubic root of 111442542 is about 481.2273883344.

Adding to 111442542 its reverse (245244111), we get a palindrome (356686653).

The spelling of 111442542 in words is "one hundred eleven million, four hundred forty-two thousand, five hundred forty-two".