123441042013 has 4 divisors (see below), whose sum is σ = 123486444160. Its totient is φ = 123395639868.

The previous prime is 123441041987. The next prime is 123441042019. The reversal of 123441042013 is 310240144321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123441042013 - 2²⁹ = 122904171101 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 (123441042019) 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, 22696995 + ... + 22702432.

It is an arithmetic number, because the mean of its divisors is an integer number (30871611040).

Almost surely, 2^123441042013 is an apocalyptic number.

It is an amenable number.

123441042013 is a deficient number, since it is larger than the sum of its proper divisors (45402147).

123441042013 is an equidigital number, since it uses as much as digits as its factorization.

123441042013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45402146.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 123441042013 its reverse (310240144321), we get a palindrome (433681186334).

The spelling of 123441042013 in words is "one hundred twenty-three billion, four hundred forty-one million, forty-two thousand, thirteen".