20442135306 has 16 divisors (see below), whose sum is σ = 41881448448. Its totient is φ = 6647848800.

The previous prime is 20442135253. The next prime is 20442135313. The reversal of 20442135306 is 60353124402.

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, 41548810 + ... + 41549301.

It is an arithmetic number, because the mean of its divisors is an integer number (2617590528).

Almost surely, 2^20442135306 is an apocalyptic number.

20442135306 is an abundant number, since it is smaller than the sum of its proper divisors (21439313142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20442135306 is a wasteful number, since it uses less digits than its factorization.

20442135306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83098157.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 20442135306 its reverse (60353124402), we get a palindrome (80795259708).

The spelling of 20442135306 in words is "twenty billion, four hundred forty-two million, one hundred thirty-five thousand, three hundred six".