111043442 has 8 divisors (see below), whose sum is σ = 167683500. Its totient is φ = 55148944.

The previous prime is 111043433. The next prime is 111043447. The reversal of 111043442 is 244340111.

It can be written as a sum of positive squares in 2 ways, for example, as 108972721 + 2070721 = 10439^2 + 1439^2 .

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

It is a super-2 number, since 2×111043442² = 24661292022414728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111043447) 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, 186017 + ... + 186612.

Almost surely, 2^111043442 is an apocalyptic number.

111043442 is a deficient number, since it is larger than the sum of its proper divisors (56640058).

111043442 is a wasteful number, since it uses less digits than its factorization.

111043442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372780.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 111043442 is about 10537.7152172565. The cubic root of 111043442 is about 480.6522412034.

Adding to 111043442 its reverse (244340111), we get a palindrome (355383553).

The spelling of 111043442 in words is "one hundred eleven million, forty-three thousand, four hundred forty-two".