111423042 has 12 divisors (see below), whose sum is σ = 241416630. Its totient is φ = 37141008.

The previous prime is 111423023. The next prime is 111423071. The reversal of 111423042 is 240324111.

It can be written as a sum of positive squares in only one way, i.e., 55935441 + 55487601 = 7479^2 + 7449^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6190169 = 111423042 / (1 + 1 + 1 + 4 + 2 + 3 + 0 + 4 + 2).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3095067 + ... + 3095102.

Almost surely, 2^111423042 is an apocalyptic number.

111423042 is an abundant number, since it is smaller than the sum of its proper divisors (129993588).

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

111423042 is a wasteful number, since it uses less digits than its factorization.

111423042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190177 (or 6190174 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 111423042 is about 10555.7113450492. The cubic root of 111423042 is about 481.1993186185.

Adding to 111423042 its reverse (240324111), we get a palindrome (351747153).

The spelling of 111423042 in words is "one hundred eleven million, four hundred twenty-three thousand, forty-two".