12145703129 has 4 divisors (see below), whose sum is σ = 13880803584. Its totient is φ = 10410602676.

The previous prime is 12145703113. The next prime is 12145703137. The reversal of 12145703129 is 92130754121.

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 a cyclic number.

It is not a de Polignac number, because 12145703129 - 2⁴ = 12145703113 is a prime.

It is a super-3 number, since 3×12145703129³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12145703149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867550217 + ... + 867550230.

It is an arithmetic number, because the mean of its divisors is an integer number (3470200896).

Almost surely, 2^12145703129 is an apocalyptic number.

It is an amenable number.

12145703129 is a deficient number, since it is larger than the sum of its proper divisors (1735100455).

12145703129 is an equidigital number, since it uses as much as digits as its factorization.

12145703129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735100454.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 12145703129 in words is "twelve billion, one hundred forty-five million, seven hundred three thousand, one hundred twenty-nine".