111561040 has 40 divisors (see below), whose sum is σ = 270661248. Its totient is φ = 42683520.

The previous prime is 111561019. The next prime is 111561053. The reversal of 111561040 is 40165111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 111560999 and 111561017.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 28476 + ... + 32155.

Almost surely, 2^111561040 is an apocalyptic number.

111561040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111561040 is an abundant number, since it is smaller than the sum of its proper divisors (159100208).

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

111561040 is a wasteful number, since it uses less digits than its factorization.

111561040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60667 (or 60661 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 111561040 is about 10562.2459732767. The cubic root of 111561040 is about 481.3978925912.

The spelling of 111561040 in words is "one hundred eleven million, five hundred sixty-one thousand, forty".