20424304124 has 24 divisors (see below), whose sum is σ = 41408182368. Its totient is φ = 8633364480.

The previous prime is 20424304123. The next prime is 20424304139. The reversal of 20424304124 is 42140342402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20424304093 and 20424304102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424304123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4994117 + ... + 4998204.

It is an arithmetic number, because the mean of its divisors is an integer number (1725340932).

Almost surely, 2^20424304124 is an apocalyptic number.

It is an amenable number.

20424304124 is an abundant number, since it is smaller than the sum of its proper divisors (20983878244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20424304124 is a wasteful number, since it uses less digits than its factorization.

20424304124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9992405 (or 9992403 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20424304124 its reverse (42140342402), we get a palindrome (62564646526).

The spelling of 20424304124 in words is "twenty billion, four hundred twenty-four million, three hundred four thousand, one hundred twenty-four".