20423410234 has 16 divisors (see below), whose sum is σ = 31970921472. Its totient is φ = 9766543248.

The previous prime is 20423410181. The next prime is 20423410243. The reversal of 20423410234 is 43201432402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20423410199 and 20423410208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452392 + ... + 495484.

It is an arithmetic number, because the mean of its divisors is an integer number (1998182592).

Almost surely, 2^20423410234 is an apocalyptic number.

20423410234 is a deficient number, since it is larger than the sum of its proper divisors (11547511238).

20423410234 is a wasteful number, since it uses less digits than its factorization.

20423410234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53421.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20423410234 its reverse (43201432402), we get a palindrome (63624842636).

The spelling of 20423410234 in words is "twenty billion, four hundred twenty-three million, four hundred ten thousand, two hundred thirty-four".