13042155021 has 24 divisors (see below), whose sum is σ = 20236331520. Its totient is φ = 7449829632.

The previous prime is 13042155017. The next prime is 13042155029. The reversal of 13042155021 is 12055124031.

It is a happy number.

It is not a de Polignac number, because 13042155021 - 2² = 13042155017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13042154982 and 13042155000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042155029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407805 + ... + 438621.

It is an arithmetic number, because the mean of its divisors is an integer number (843180480).

Almost surely, 2^13042155021 is an apocalyptic number.

It is an amenable number.

13042155021 is a deficient number, since it is larger than the sum of its proper divisors (7194176499).

13042155021 is a wasteful number, since it uses less digits than its factorization.

13042155021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33713 (or 33706 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 13042155021 its reverse (12055124031), we get a palindrome (25097279052).

The spelling of 13042155021 in words is "thirteen billion, forty-two million, one hundred fifty-five thousand, twenty-one".