12867129 has 12 divisors (see below), whose sum is σ = 20275632. Its totient is φ = 7798200.

The previous prime is 12867103. The next prime is 12867131. The reversal of 12867129 is 92176821.

It is not a de Polignac number, because 12867129 - 2⁸ = 12866873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12867093 and 12867102.

It is not an unprimeable number, because it can be changed into a prime (12867229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64887 + ... + 65084.

It is an arithmetic number, because the mean of its divisors is an integer number (1689636).

Almost surely, 2^12867129 is an apocalyptic number.

It is an amenable number.

12867129 is a deficient number, since it is larger than the sum of its proper divisors (7408503).

12867129 is a wasteful number, since it uses less digits than its factorization.

12867129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129988 (or 129985 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12867129 is about 3587.0780588105. The cubic root of 12867129 is about 234.3296362336.

It can be divided in two parts, 12867 and 129, that added together give a square (12996 = 114²).

The spelling of 12867129 in words is "twelve million, eight hundred sixty-seven thousand, one hundred twenty-nine".