20402123104241 has 8 divisors (see below), whose sum is σ = 20418706667520. Its totient is φ = 20385540530928.

The previous prime is 20402123104219. The next prime is 20402123104243. The reversal of 20402123104241 is 14240132120402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20402123104241 - 2¹⁰ = 20402123103217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20402123104241.

It is not an unprimeable number, because it can be changed into a prime (20402123104243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44224730 + ... + 44683676.

It is an arithmetic number, because the mean of its divisors is an integer number (2552338333440).

Almost surely, 2^{20402123104241} is an apocalyptic number.

It is an amenable number.

20402123104241 is a deficient number, since it is larger than the sum of its proper divisors (16583563279).

20402123104241 is a wasteful number, since it uses less digits than its factorization.

20402123104241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494983.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20402123104241 its reverse (14240132120402), we get a palindrome (34642255224643).

The spelling of 20402123104241 in words is "twenty trillion, four hundred two billion, one hundred twenty-three million, one hundred four thousand, two hundred forty-one".