20424021023 has 8 divisors (see below), whose sum is σ = 24146626080. Its totient is φ = 16902637920.

The previous prime is 20424020989. The next prime is 20424021029. The reversal of 20424021023 is 32012042402.

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

It is not a de Polignac number, because 20424021023 - 2⁶ = 20424020959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20424020986 and 20424021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424021029) 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, 50305268 + ... + 50305673.

It is an arithmetic number, because the mean of its divisors is an integer number (3018328260).

Almost surely, 2^20424021023 is an apocalyptic number.

20424021023 is a deficient number, since it is larger than the sum of its proper divisors (3722605057).

20424021023 is a wasteful number, since it uses less digits than its factorization.

20424021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100610977.

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

Adding to 20424021023 its reverse (32012042402), we get a palindrome (52436063425).

The spelling of 20424021023 in words is "twenty billion, four hundred twenty-four million, twenty-one thousand, twenty-three".