12720411 has 12 divisors (see below), whose sum is σ = 20044440. Its totient is φ = 7709280.

The previous prime is 12720361. The next prime is 12720427. The reversal of 12720411 is 11402721.

12720411 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12720411 - 2⁶ = 12720347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64146 + ... + 64343.

It is an arithmetic number, because the mean of its divisors is an integer number (1670370).

Almost surely, 2^12720411 is an apocalyptic number.

12720411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12720411 is a deficient number, since it is larger than the sum of its proper divisors (7324029).

12720411 is a wasteful number, since it uses less digits than its factorization.

12720411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128506 (or 128503 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 12720411 is about 3566.5685188988. The cubic root of 12720411 is about 233.4355780931.

It can be divided in two parts, 12720 and 411, that added together give a palindrome (13131).

The spelling of 12720411 in words is "twelve million, seven hundred twenty thousand, four hundred eleven".