111404641 has 4 divisors (see below), whose sum is σ = 111432384. Its totient is φ = 111376900.

The previous prime is 111404603. The next prime is 111404651. The reversal of 111404641 is 146404111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111404641 - 2⁹ = 111404129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111404651) 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, 6565 + ... + 16306.

It is an arithmetic number, because the mean of its divisors is an integer number (27858096).

Almost surely, 2^111404641 is an apocalyptic number.

It is an amenable number.

111404641 is a deficient number, since it is larger than the sum of its proper divisors (27743).

111404641 is an equidigital number, since it uses as much as digits as its factorization.

111404641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27742.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 111404641 is about 10554.8396956088. The cubic root of 111404641 is about 481.1728278796.

Adding to 111404641 its reverse (146404111), we get a palindrome (257808752).

The spelling of 111404641 in words is "one hundred eleven million, four hundred four thousand, six hundred forty-one".