12870129 has 4 divisors (see below), whose sum is σ = 17160176. Its totient is φ = 8580084.

The previous prime is 12870107. The next prime is 12870157. The reversal of 12870129 is 92107821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12870129 - 2⁷ = 12870001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12870096 and 12870105.

It is not an unprimeable number, because it can be changed into a prime (12870199) 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 3 ways as a sum of consecutive naturals, for example, 2145019 + ... + 2145024.

It is an arithmetic number, because the mean of its divisors is an integer number (4290044).

Almost surely, 2^12870129 is an apocalyptic number.

It is an amenable number.

12870129 is a deficient number, since it is larger than the sum of its proper divisors (4290047).

12870129 is an equidigital number, since it uses as much as digits as its factorization.

12870129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290046.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12870129 is about 3587.4962020886. The cubic root of 12870129 is about 234.3478463120.

The spelling of 12870129 in words is "twelve million, eight hundred seventy thousand, one hundred twenty-nine".