111242115 has 24 divisors (see below), whose sum is σ = 199470960. Its totient is φ = 57282624.

The previous prime is 111242083. The next prime is 111242119. The reversal of 111242115 is 511242111.

It is not a de Polignac number, because 111242115 - 2⁵ = 111242083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111242119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41317 + ... + 43926.

It is an arithmetic number, because the mean of its divisors is an integer number (8311290).

Almost surely, 2^111242115 is an apocalyptic number.

111242115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111242115 is a deficient number, since it is larger than the sum of its proper divisors (88228845).

111242115 is a wasteful number, since it uses less digits than its factorization.

111242115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85283 (or 85280 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 111242115 is about 10547.1377633934. The cubic root of 111242115 is about 480.9387228645.

Adding to 111242115 its reverse (511242111), we get a palindrome (622484226).

The spelling of 111242115 in words is "one hundred eleven million, two hundred forty-two thousand, one hundred fifteen".