12420420513 has 8 divisors (see below), whose sum is σ = 16561085568. Its totient is φ = 8280017904.

The previous prime is 12420420487. The next prime is 12420420547. The reversal of 12420420513 is 31502402421.

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

It is not a de Polignac number, because 12420420513 - 2²¹ = 12418323361 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12420420553) 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, 119131 + ... + 197567.

It is an arithmetic number, because the mean of its divisors is an integer number (2070135696).

Almost surely, 2^12420420513 is an apocalyptic number.

It is an amenable number.

12420420513 is a deficient number, since it is larger than the sum of its proper divisors (4140665055).

12420420513 is an equidigital number, since it uses as much as digits as its factorization.

12420420513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131223.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 12420420513 its reverse (31502402421), we get a palindrome (43922822934).

The spelling of 12420420513 in words is "twelve billion, four hundred twenty million, four hundred twenty thousand, five hundred thirteen".