20423424430 has 16 divisors (see below), whose sum is σ = 36764939664. Its totient is φ = 8168752960.

The previous prime is 20423424409. The next prime is 20423424479. The reversal of 20423424430 is 3442432402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 76545 + ... + 216115.

It is an arithmetic number, because the mean of its divisors is an integer number (2297808729).

Almost surely, 2^20423424430 is an apocalyptic number.

20423424430 is a deficient number, since it is larger than the sum of its proper divisors (16341515234).

20423424430 is a wasteful number, since it uses less digits than its factorization.

20423424430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154211.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20423424430 its reverse (3442432402), we get a palindrome (23865856832).

The spelling of 20423424430 in words is "twenty billion, four hundred twenty-three million, four hundred twenty-four thousand, four hundred thirty".