20422402424 has 8 divisors (see below), whose sum is σ = 38292004560. Its totient is φ = 10211201208.

The previous prime is 20422402421. The next prime is 20422402433. The reversal of 20422402424 is 42420422402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20422402393 and 20422402402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422402421) 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 as a sum of consecutive naturals, namely, 1276400144 + ... + 1276400159.

It is an arithmetic number, because the mean of its divisors is an integer number (4786500570).

Almost surely, 2^20422402424 is an apocalyptic number.

It is an amenable number.

20422402424 is a deficient number, since it is larger than the sum of its proper divisors (17869602136).

20422402424 is a wasteful number, since it uses less digits than its factorization.

20422402424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552800309 (or 2552800305 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20422402424 its reverse (42420422402), we get a palindrome (62842824826).

The spelling of 20422402424 in words is "twenty billion, four hundred twenty-two million, four hundred two thousand, four hundred twenty-four".