12434304420 has 72 divisors (see below), whose sum is σ = 37857750840. Its totient is φ = 3303475200.

The previous prime is 12434304419. The next prime is 12434304427. The reversal of 12434304420 is 2440343421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 191767104 + 12242537316 = 13848^2 + 110646^2 .

It is a super-2 number, since 2×12434304420² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12434304427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79981 + ... + 176820.

It is an arithmetic number, because the mean of its divisors is an integer number (525802095).

Almost surely, 2^12434304420 is an apocalyptic number.

12434304420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12434304420 is an abundant number, since it is smaller than the sum of its proper divisors (25423446420).

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

12434304420 is a wasteful number, since it uses less digits than its factorization.

12434304420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257085 (or 257080 counting only the distinct ones).

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

Adding to 12434304420 its reverse (2440343421), we get a palindrome (14874647841).

The spelling of 12434304420 in words is "twelve billion, four hundred thirty-four million, three hundred four thousand, four hundred twenty".