432121111 has 4 divisors (see below), whose sum is σ = 432346824. Its totient is φ = 431895400.

The previous prime is 432121097. The next prime is 432121159. The reversal of 432121111 is 111121234.

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

It is a cyclic number.

It is not a de Polignac number, because 432121111 - 2¹¹ = 432119063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432121411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109960 + ... + 113821.

It is an arithmetic number, because the mean of its divisors is an integer number (108086706).

Almost surely, 2^432121111 is an apocalyptic number.

432121111 is a deficient number, since it is larger than the sum of its proper divisors (225713).

432121111 is a wasteful number, since it uses less digits than its factorization.

432121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225712.

The product of its digits is 48, while the sum is 16.

The square root of 432121111 is about 20787.5229645093. The cubic root of 432121111 is about 756.0232669929.

Adding to 432121111 its reverse (111121234), we get a palindrome (543242345).

The spelling of 432121111 in words is "four hundred thirty-two million, one hundred twenty-one thousand, one hundred eleven".