111690542 has 16 divisors (see below), whose sum is σ = 173804400. Its totient is φ = 53766720.

The previous prime is 111690539. The next prime is 111690581. The reversal of 111690542 is 245096111.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19442 + ... + 24522.

It is an arithmetic number, because the mean of its divisors is an integer number (10862775).

Almost surely, 2^111690542 is an apocalyptic number.

111690542 is a deficient number, since it is larger than the sum of its proper divisors (62113858).

111690542 is a wasteful number, since it uses less digits than its factorization.

111690542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 111690542 is about 10568.3746148592. The cubic root of 111690542 is about 481.5840922504.

The spelling of 111690542 in words is "one hundred eleven million, six hundred ninety thousand, five hundred forty-two".