43234240421 has 8 divisors (see below), whose sum is σ = 46221873984. Its totient is φ = 40295989440.

The previous prime is 43234240391. The next prime is 43234240463. The reversal of 43234240421 is 12404243234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43234240421 - 2³⁴ = 26054371237 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 (43234840421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12343835 + ... + 12347336.

It is an arithmetic number, because the mean of its divisors is an integer number (5777734248).

Almost surely, 2^43234240421 is an apocalyptic number.

It is an amenable number.

43234240421 is a deficient number, since it is larger than the sum of its proper divisors (2987633563).

43234240421 is a wasteful number, since it uses less digits than its factorization.

43234240421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24691291.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 43234240421 its reverse (12404243234), we get a palindrome (55638483655).

The spelling of 43234240421 in words is "forty-three billion, two hundred thirty-four million, two hundred forty thousand, four hundred twenty-one".