12420134441 has 32 divisors (see below), whose sum is σ = 14831631360. Its totient is φ = 10251662400.

The previous prime is 12420134429. The next prime is 12420134449. The reversal of 12420134441 is 14443102421.

It is a cyclic number.

It is not a de Polignac number, because 12420134441 - 2²² = 12415940137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12420134441.

It is not an unprimeable number, because it can be changed into a prime (12420134449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5308850 + ... + 5311188.

It is an arithmetic number, because the mean of its divisors is an integer number (463488480).

Almost surely, 2^12420134441 is an apocalyptic number.

12420134441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12420134441 is a deficient number, since it is larger than the sum of its proper divisors (2411496919).

12420134441 is a wasteful number, since it uses less digits than its factorization.

12420134441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 12420134441 its reverse (14443102421), we get a palindrome (26863236862).

The spelling of 12420134441 in words is "twelve billion, four hundred twenty million, one hundred thirty-four thousand, four hundred forty-one".