111421432 has 8 divisors (see below), whose sum is σ = 208915200. Its totient is φ = 55710712.

The previous prime is 111421411. The next prime is 111421447. The reversal of 111421432 is 234124111.

It is a tau number, because it is divible by the number of its divisors (8).

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, 6963832 + ... + 6963847.

It is an arithmetic number, because the mean of its divisors is an integer number (26114400).

Almost surely, 2^111421432 is an apocalyptic number.

It is an amenable number.

111421432 is a deficient number, since it is larger than the sum of its proper divisors (97493768).

111421432 is a wasteful number, since it uses less digits than its factorization.

111421432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13927685 (or 13927681 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 111421432 is about 10555.6350827414. The cubic root of 111421432 is about 481.1970009213.

Adding to 111421432 its reverse (234124111), we get a palindrome (345545543).

The spelling of 111421432 in words is "one hundred eleven million, four hundred twenty-one thousand, four hundred thirty-two".