43233434421 has 4 divisors (see below), whose sum is σ = 57644579232. Its totient is φ = 28822289612.

The previous prime is 43233434411. The next prime is 43233434459. The reversal of 43233434421 is 12443433234.

It is a happy number.

43233434421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43233434421 - 2⁵ = 43233434389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43233434411) 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, 7205572401 + ... + 7205572406.

It is an arithmetic number, because the mean of its divisors is an integer number (14411144808).

Almost surely, 2^43233434421 is an apocalyptic number.

It is an amenable number.

43233434421 is a deficient number, since it is larger than the sum of its proper divisors (14411144811).

43233434421 is a wasteful number, since it uses less digits than its factorization.

43233434421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14411144810.

The product of its digits is 82944, while the sum is 33.

Adding to 43233434421 its reverse (12443433234), we get a palindrome (55676867655).

The spelling of 43233434421 in words is "forty-three billion, two hundred thirty-three million, four hundred thirty-four thousand, four hundred twenty-one".