20442122434 has 16 divisors (see below), whose sum is σ = 30727941120. Its totient is φ = 10199497680.

The previous prime is 20442122381. The next prime is 20442122483. The reversal of 20442122434 is 43422124402.

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, 2310399 + ... + 2319229.

It is an arithmetic number, because the mean of its divisors is an integer number (1920496320).

Almost surely, 2^20442122434 is an apocalyptic number.

20442122434 is a deficient number, since it is larger than the sum of its proper divisors (10285818686).

20442122434 is a wasteful number, since it uses less digits than its factorization.

20442122434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 20442122434 its reverse (43422124402), we get a palindrome (63864246836).

The spelling of 20442122434 in words is "twenty billion, four hundred forty-two million, one hundred twenty-two thousand, four hundred thirty-four".