20424010123 has 8 divisors (see below), whose sum is σ = 22311394560. Its totient is φ = 18541735080.

The previous prime is 20424010111. The next prime is 20424010141. The reversal of 20424010123 is 32101042402.

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

It is not a de Polignac number, because 20424010123 - 2⁵ = 20424010091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20424010123.

It is not an unprimeable number, because it can be changed into a prime (20424010823) 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, 1268983 + ... + 1284976.

It is an arithmetic number, because the mean of its divisors is an integer number (2788924320).

Almost surely, 2^20424010123 is an apocalyptic number.

20424010123 is a deficient number, since it is larger than the sum of its proper divisors (1887384437).

20424010123 is a wasteful number, since it uses less digits than its factorization.

20424010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554697.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20424010123 its reverse (32101042402), we get a palindrome (52525052525).

The spelling of 20424010123 in words is "twenty billion, four hundred twenty-four million, ten thousand, one hundred twenty-three".