20423120030 has 16 divisors (see below), whose sum is σ = 36954088704. Its totient is φ = 8126476320.

The previous prime is 20423119973. The next prime is 20423120033. The reversal of 20423120030 is 3002132402.

It is a junction number, because it is equal to n+sod(n) for n = 20423119990 and 20423120008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423120033) by changing a digit.

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, 5344457 + ... + 5348276.

It is an arithmetic number, because the mean of its divisors is an integer number (2309630544).

Almost surely, 2^20423120030 is an apocalyptic number.

20423120030 is a deficient number, since it is larger than the sum of its proper divisors (16530968674).

20423120030 is a wasteful number, since it uses less digits than its factorization.

20423120030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10692931.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20423120030 its reverse (3002132402), we get a palindrome (23425252432).

The spelling of 20423120030 in words is "twenty billion, four hundred twenty-three million, one hundred twenty thousand, thirty".