12043402434 has 64 divisors (see below), whose sum is σ = 32196249600. Its totient is φ = 3259866384.

The previous prime is 12043402421. The next prime is 12043402471. The reversal of 12043402434 is 43420434021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12043402398 and 12043402407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 831262 + ... + 845625.

It is an arithmetic number, because the mean of its divisors is an integer number (503066400).

Almost surely, 2^12043402434 is an apocalyptic number.

12043402434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12043402434 is an abundant number, since it is smaller than the sum of its proper divisors (20152847166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12043402434 is a wasteful number, since it uses less digits than its factorization.

12043402434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676924 (or 1676918 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 12043402434 its reverse (43420434021), we get a palindrome (55463836455).

The spelling of 12043402434 in words is "twelve billion, forty-three million, four hundred two thousand, four hundred thirty-four".