20402044242 has 16 divisors (see below), whose sum is σ = 40806353280. Its totient is φ = 6800303952.

The previous prime is 20402044231. The next prime is 20402044259. The reversal of 20402044242 is 24244020402.

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, 36759 + ... + 205317.

It is an arithmetic number, because the mean of its divisors is an integer number (2550397080).

Almost surely, 2^20402044242 is an apocalyptic number.

20402044242 is an abundant number, since it is smaller than the sum of its proper divisors (20404309038).

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

20402044242 is a wasteful number, since it uses less digits than its factorization.

20402044242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188737.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20402044242 its reverse (24244020402), we get a palindrome (44646064644).

The spelling of 20402044242 in words is "twenty billion, four hundred two million, forty-four thousand, two hundred forty-two".