111042420 has 48 divisors (see below), whose sum is σ = 316794240. Its totient is φ = 29051776.

The previous prime is 111042401. The next prime is 111042427. The reversal of 111042420 is 24240111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111042420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111042427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14280 + ... + 20639.

It is an arithmetic number, because the mean of its divisors is an integer number (6599880).

Almost surely, 2^111042420 is an apocalyptic number.

111042420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111042420 is an abundant number, since it is smaller than the sum of its proper divisors (205751820).

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

111042420 is a wasteful number, since it uses less digits than its factorization.

111042420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34984 (or 34982 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 111042420 is about 10537.6667246597. Note that the first 3 decimals coincide. The cubic root of 111042420 is about 480.6507666210.

Adding to 111042420 its reverse (24240111), we get a palindrome (135282531).

The spelling of 111042420 in words is "one hundred eleven million, forty-two thousand, four hundred twenty".