111412043 has 4 divisors (see below), whose sum is σ = 113782560. Its totient is φ = 109041528.

The previous prime is 111412039. The next prime is 111412057. The reversal of 111412043 is 340214111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111412043 - 2² = 111412039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111412073) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1185188 + ... + 1185281.

It is an arithmetic number, because the mean of its divisors is an integer number (28445640).

Almost surely, 2^111412043 is an apocalyptic number.

111412043 is a deficient number, since it is larger than the sum of its proper divisors (2370517).

111412043 is an equidigital number, since it uses as much as digits as its factorization.

111412043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370516.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 111412043 is about 10555.1903346174. The cubic root of 111412043 is about 481.1834844147.

Adding to 111412043 its reverse (340214111), we get a palindrome (451626154).

The spelling of 111412043 in words is "one hundred eleven million, four hundred twelve thousand, forty-three".