12434421152 has 24 divisors (see below), whose sum is σ = 24512910912. Its totient is φ = 6208920000.

The previous prime is 12434421091. The next prime is 12434421157. The reversal of 12434421152 is 25112443421.

It is a happy number.

It is a super-2 number, since 2×12434421152² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12434421157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234674 + ... + 282737.

It is an arithmetic number, because the mean of its divisors is an integer number (1021371288).

Almost surely, 2^12434421152 is an apocalyptic number.

It is an amenable number.

12434421152 is a deficient number, since it is larger than the sum of its proper divisors (12078489760).

12434421152 is an equidigital number, since it uses as much as digits as its factorization.

12434421152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518172 (or 518164 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

Adding to 12434421152 its reverse (25112443421), we get a palindrome (37546864573).

The spelling of 12434421152 in words is "twelve billion, four hundred thirty-four million, four hundred twenty-one thousand, one hundred fifty-two".