12420103134424 has 8 divisors (see below), whose sum is σ = 23287693377060. Its totient is φ = 6210051567208.

The previous prime is 12420103134377. The next prime is 12420103134427. The reversal of 12420103134424 is 42443130102421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420103134427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776256445894 + ... + 776256445909.

Almost surely, 2^{12420103134424} is an apocalyptic number.

It is an amenable number.

12420103134424 is a deficient number, since it is larger than the sum of its proper divisors (10867590242636).

12420103134424 is a wasteful number, since it uses less digits than its factorization.

12420103134424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552512891809 (or 1552512891805 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 12420103134424 its reverse (42443130102421), we get a palindrome (54863233236845).

The spelling of 12420103134424 in words is "twelve trillion, four hundred twenty billion, one hundred three million, one hundred thirty-four thousand, four hundred twenty-four".