111404144 has 20 divisors (see below), whose sum is σ = 227206440. Its totient is φ = 52770240.

The previous prime is 111404129. The next prime is 111404159. The reversal of 111404144 is 441404111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111404129) and next prime (111404159).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182927 + ... + 183534.

It is an arithmetic number, because the mean of its divisors is an integer number (11360322).

Almost surely, 2^111404144 is an apocalyptic number.

It is an amenable number.

111404144 is an abundant number, since it is smaller than the sum of its proper divisors (115802296).

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

111404144 is a wasteful number, since it uses less digits than its factorization.

111404144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366488 (or 366482 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 111404144 is about 10554.8161518806. The cubic root of 111404144 is about 481.1721123402.

Adding to 111404144 its reverse (441404111), we get a palindrome (552808255).

The spelling of 111404144 in words is "one hundred eleven million, four hundred four thousand, one hundred forty-four".