23421205424 has 20 divisors (see below), whose sum is σ = 46605034944. Its totient is φ = 11394099648.

The previous prime is 23421205403. The next prime is 23421205429. The reversal of 23421205424 is 42450212432.

It is not an unprimeable number, because it can be changed into a prime (23421205429) 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, 19780832 + ... + 19782015.

Almost surely, 2^23421205424 is an apocalyptic number.

It is an amenable number.

23421205424 is a deficient number, since it is larger than the sum of its proper divisors (23183829520).

23421205424 is a wasteful number, since it uses less digits than its factorization.

23421205424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39562892 (or 39562886 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 23421205424 its reverse (42450212432), we get a palindrome (65871417856).

The spelling of 23421205424 in words is "twenty-three billion, four hundred twenty-one million, two hundred five thousand, four hundred twenty-four".