12345129 has 24 divisors (see below), whose sum is σ = 18712512. Its totient is φ = 8132400.

The previous prime is 12345127. The next prime is 12345143. The reversal of 12345129 is 92154321.

It is not a de Polignac number, because 12345129 - 2¹ = 12345127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12345121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24292 + ... + 24794.

It is an arithmetic number, because the mean of its divisors is an integer number (779688).

Almost surely, 2^12345129 is an apocalyptic number.

It is an amenable number.

12345129 is a deficient number, since it is larger than the sum of its proper divisors (6367383).

12345129 is an equidigital number, since it uses as much as digits as its factorization.

12345129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 607 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12345129 is about 3513.5635756309. The cubic root of 12345129 is about 231.1169925172.

The spelling of 12345129 in words is "twelve million, three hundred forty-five thousand, one hundred twenty-nine".