12412729 has 6 divisors (see below), whose sum is σ = 14439354. Its totient is φ = 10639440.

The previous prime is 12412693. The next prime is 12412739. The reversal of 12412729 is 92721421.

12412729 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10549504 + 1863225 = 3248^2 + 1365^2 .

It is not a de Polignac number, because 12412729 - 2¹³ = 12404537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12412697 and 12412706.

It is not an unprimeable number, because it can be changed into a prime (12412739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126612 + ... + 126709.

It is an arithmetic number, because the mean of its divisors is an integer number (2406559).

Almost surely, 2^12412729 is an apocalyptic number.

It is an amenable number.

12412729 is a deficient number, since it is larger than the sum of its proper divisors (2026625).

12412729 is an equidigital number, since it uses as much as digits as its factorization.

12412729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253335 (or 253328 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 12412729 is about 3523.1703052790. The cubic root of 12412729 is about 231.5380783785.

The spelling of 12412729 in words is "twelve million, four hundred twelve thousand, seven hundred twenty-nine".