123042505013 has 8 divisors (see below), whose sum is σ = 128855695488. Its totient is φ = 117267940944.

The previous prime is 123042505007. The next prime is 123042505037. The reversal of 123042505013 is 310505240321.

It is a happy number.

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

It is not a de Polignac number, because 123042505013 - 2⁴ = 123042504997 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 (123042505043) 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, 9650081 + ... + 9662822.

It is an arithmetic number, because the mean of its divisors is an integer number (16106961936).

Almost surely, 2^123042505013 is an apocalyptic number.

It is an amenable number.

123042505013 is a deficient number, since it is larger than the sum of its proper divisors (5813190475).

123042505013 is a wasteful number, since it uses less digits than its factorization.

123042505013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19313203.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 123042505013 its reverse (310505240321), we get a palindrome (433547745334).

The spelling of 123042505013 in words is "one hundred twenty-three billion, forty-two million, five hundred five thousand, thirteen".