111189942 has 32 divisors (see below), whose sum is σ = 249500160. Its totient is φ = 36701640.

The previous prime is 111189941. The next prime is 111189943. The reversal of 111189942 is 249981111.

It is an interprime number because it is at equal distance from previous prime (111189941) and next prime (111189943).

It is a junction number, because it is equal to n+sod(n) for n = 111189897 and 111189906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111189941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4434 + ... + 15557.

It is an arithmetic number, because the mean of its divisors is an integer number (7796880).

Almost surely, 2^111189942 is an apocalyptic number.

111189942 is an abundant number, since it is smaller than the sum of its proper divisors (138310218).

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

111189942 is a wasteful number, since it uses less digits than its factorization.

111189942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20105 (or 20099 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The square root of 111189942 is about 10544.6641482790. The cubic root of 111189942 is about 480.8635237076.

The spelling of 111189942 in words is "one hundred eleven million, one hundred eighty-nine thousand, nine hundred forty-two".