20124040430 has 16 divisors (see below), whose sum is σ = 39009678624. Its totient is φ = 7430414880.

The previous prime is 20124040381. The next prime is 20124040439. The reversal of 20124040430 is 3404042102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124040439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77400026 + ... + 77400285.

It is an arithmetic number, because the mean of its divisors is an integer number (2438104914).

Almost surely, 2^20124040430 is an apocalyptic number.

20124040430 is a deficient number, since it is larger than the sum of its proper divisors (18885638194).

20124040430 is a wasteful number, since it uses less digits than its factorization.

20124040430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154800331.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20124040430 its reverse (3404042102), we get a palindrome (23528082532).

The spelling of 20124040430 in words is "twenty billion, one hundred twenty-four million, forty thousand, four hundred thirty".