111781742 has 4 divisors (see below), whose sum is σ = 167672616. Its totient is φ = 55890870.

The previous prime is 111781739. The next prime is 111781751. The reversal of 111781742 is 247187111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111781699 and 111781708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27945434 + ... + 27945437.

It is an arithmetic number, because the mean of its divisors is an integer number (41918154).

Almost surely, 2^111781742 is an apocalyptic number.

111781742 is a deficient number, since it is larger than the sum of its proper divisors (55890874).

111781742 is an equidigital number, since it uses as much as digits as its factorization.

111781742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55890873.

The product of its digits is 3136, while the sum is 32.

The square root of 111781742 is about 10572.6884944181. The cubic root of 111781742 is about 481.7151344423.

The spelling of 111781742 in words is "one hundred eleven million, seven hundred eighty-one thousand, seven hundred forty-two".