13044242130421 has 4 divisors (see below), whose sum is σ = 13811550491052. Its totient is φ = 12276933769792.

The previous prime is 13044242130419. The next prime is 13044242130427. The reversal of 13044242130421 is 12403124244031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12108938444100 + 935303686321 = 3479790^2 + 967111^2 .

It is a cyclic number.

It is not a de Polignac number, because 13044242130421 - 2¹ = 13044242130419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044242130427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383654180290 + ... + 383654180323.

It is an arithmetic number, because the mean of its divisors is an integer number (3452887622763).

Almost surely, 2^{13044242130421} is an apocalyptic number.

It is an amenable number.

13044242130421 is a deficient number, since it is larger than the sum of its proper divisors (767308360631).

13044242130421 is an equidigital number, since it uses as much as digits as its factorization.

13044242130421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767308360630.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 13044242130421 its reverse (12403124244031), we get a palindrome (25447366374452).

The spelling of 13044242130421 in words is "thirteen trillion, forty-four billion, two hundred forty-two million, one hundred thirty thousand, four hundred twenty-one".