20120023406 has 16 divisors (see below), whose sum is σ = 34526795616. Its totient is φ = 8614035456.

The previous prime is 20120023393. The next prime is 20120023423. The reversal of 20120023406 is 60432002102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721811 + ... + 749166.

It is an arithmetic number, because the mean of its divisors is an integer number (2157924726).

Almost surely, 2^20120023406 is an apocalyptic number.

20120023406 is a deficient number, since it is larger than the sum of its proper divisors (14406772210).

20120023406 is a wasteful number, since it uses less digits than its factorization.

20120023406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471963.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20120023406 its reverse (60432002102), we get a palindrome (80552025508).

The spelling of 20120023406 in words is "twenty billion, one hundred twenty million, twenty-three thousand, four hundred six".