12420487448 has 16 divisors (see below), whose sum is σ = 23298198000. Its totient is φ = 6207634656.

The previous prime is 12420487379. The next prime is 12420487451. The reversal of 12420487448 is 84478402421.

It is a junction number, because it is equal to n+sod(n) for n = 12420487399 and 12420487408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305828 + ... + 344051.

It is an arithmetic number, because the mean of its divisors is an integer number (1456137375).

Almost surely, 2^12420487448 is an apocalyptic number.

It is an amenable number.

12420487448 is a deficient number, since it is larger than the sum of its proper divisors (10877710552).

12420487448 is a wasteful number, since it uses less digits than its factorization.

12420487448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652274 (or 652270 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 44.

Adding to 12420487448 its reverse (84478402421), we get a palindrome (96898889869).

The spelling of 12420487448 in words is "twelve billion, four hundred twenty million, four hundred eighty-seven thousand, four hundred forty-eight".