111839142 has 16 divisors (see below), whose sum is σ = 223808832. Its totient is φ = 37257960.

The previous prime is 111839131. The next prime is 111839153. The reversal of 111839142 is 241938111.

It is an interprime number because it is at equal distance from previous prime (111839131) and next prime (111839153).

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, 8413 + ... + 17159.

It is an arithmetic number, because the mean of its divisors is an integer number (13988052).

Almost surely, 2^111839142 is an apocalyptic number.

111839142 is an abundant number, since it is smaller than the sum of its proper divisors (111969690).

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

111839142 is a wasteful number, since it uses less digits than its factorization.

111839142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10883.

The product of its digits is 1728, while the sum is 30.

The square root of 111839142 is about 10575.4026873685. The cubic root of 111839142 is about 481.7975740153.

The spelling of 111839142 in words is "one hundred eleven million, eight hundred thirty-nine thousand, one hundred forty-two".