20908041242 has 32 divisors (see below), whose sum is σ = 34572994560. Its totient is φ = 9404095680.

The previous prime is 20908041241. The next prime is 20908041251. The reversal of 20908041242 is 24214080902.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20908041199 and 20908041208.

It is not an unprimeable number, because it can be changed into a prime (20908041241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077248 + ... + 1096484.

It is an arithmetic number, because the mean of its divisors is an integer number (1080406080).

Almost surely, 2^20908041242 is an apocalyptic number.

20908041242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20908041242 is a deficient number, since it is larger than the sum of its proper divisors (13664953318).

20908041242 is a wasteful number, since it uses less digits than its factorization.

20908041242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19766.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 20908041242 in words is "twenty billion, nine hundred eight million, forty-one thousand, two hundred forty-two".