12820508205042 has 32 divisors (see below), whose sum is σ = 26075980157760. Its totient is φ = 4201010834240.

The previous prime is 12820508204963. The next prime is 12820508205047. The reversal of 12820508205042 is 24050280502821.

It is not an unprimeable number, because it can be changed into a prime (12820508205047) 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, 29599228 + ... + 30029240.

It is an arithmetic number, because the mean of its divisors is an integer number (814874379930).

Almost surely, 2^{12820508205042} is an apocalyptic number.

12820508205042 is an abundant number, since it is smaller than the sum of its proper divisors (13255471952718).

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

12820508205042 is a wasteful number, since it uses less digits than its factorization.

12820508205042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514298.

The product of its (nonzero) digits is 102400, while the sum is 39.

Adding to 12820508205042 its reverse (24050280502821), we get a palindrome (36870788707863).

The spelling of 12820508205042 in words is "twelve trillion, eight hundred twenty billion, five hundred eight million, two hundred five thousand, forty-two".