12420434204 has 12 divisors (see below), whose sum is σ = 21737469264. Its totient is φ = 6209728704.

The previous prime is 12420434189. The next prime is 12420434227. The reversal of 12420434204 is 40243402421.

It is a happy number.

It is a super-2 number, since 2×12420434204² (a number of 21 digits) contains 22 as substring.

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, 61544 + ... + 169199.

It is an arithmetic number, because the mean of its divisors is an integer number (1811455772).

Almost surely, 2^12420434204 is an apocalyptic number.

It is an amenable number.

12420434204 is a deficient number, since it is larger than the sum of its proper divisors (9317035060).

12420434204 is a wasteful number, since it uses less digits than its factorization.

12420434204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244204 (or 244202 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 12420434204 its reverse (40243402421), we get a palindrome (52663836625).

The spelling of 12420434204 in words is "twelve billion, four hundred twenty million, four hundred thirty-four thousand, two hundred four".