12408129 has 6 divisors (see below), whose sum is σ = 17922866. Its totient is φ = 8272080.

The previous prime is 12408127. The next prime is 12408131. The reversal of 12408129 is 92180421.

12408129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12408127) and next prime (12408131).

It can be written as a sum of positive squares in only one way, i.e., 11209104 + 1199025 = 3348^2 + 1095^2 .

It is not a de Polignac number, because 12408129 - 2¹ = 12408127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12408127) 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, 689332 + ... + 689349.

Almost surely, 2^12408129 is an apocalyptic number.

It is an amenable number.

12408129 is a deficient number, since it is larger than the sum of its proper divisors (5514737).

12408129 is a wasteful number, since it uses less digits than its factorization.

12408129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378687 (or 1378684 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12408129 is about 3522.5174236617. The cubic root of 12408129 is about 231.5094731525.

The spelling of 12408129 in words is "twelve million, four hundred eight thousand, one hundred twenty-nine".