12429 has 6 divisors (see below), whose sum is σ = 17966. Its totient is φ = 8280.

The previous prime is 12421. The next prime is 12433. The reversal of 12429 is 92421.

It can be written as a sum of positive squares in only one way, i.e., 10404 + 2025 = 102^2 + 45^2 .

It is not a de Polignac number, because 12429 - 2³ = 12421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421) 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, 682 + ... + 699.

2¹²⁴²⁹ is an apocalyptic number.

It is an amenable number.

12429 is a deficient number, since it is larger than the sum of its proper divisors (5537).

12429 is a wasteful number, since it uses less digits than its factorization.

12429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 1384 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 12429 is about 111.4854250564. The cubic root of 12429 is about 23.1639203365.

It can be divided in two parts, 124 and 29, that added together give a triangular number (153 = T₁₇).

The spelling of 12429 in words is "twelve thousand, four hundred twenty-nine".