12042515013 has 4 divisors (see below), whose sum is σ = 16056686688. Its totient is φ = 8028343340.

The previous prime is 12042515011. The next prime is 12042515071. The reversal of 12042515013 is 31051524021.

It is a happy number.

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 12042515013 - 2¹ = 12042515011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042515011) 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, 2007085833 + ... + 2007085838.

It is an arithmetic number, because the mean of its divisors is an integer number (4014171672).

Almost surely, 2^12042515013 is an apocalyptic number.

It is an amenable number.

12042515013 is a deficient number, since it is larger than the sum of its proper divisors (4014171675).

12042515013 is an equidigital number, since it uses as much as digits as its factorization.

12042515013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014171674.

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

The spelling of 12042515013 in words is "twelve billion, forty-two million, five hundred fifteen thousand, thirteen".