129071005 has 8 divisors (see below), whose sum is σ = 177011712. Its totient is φ = 88505808.

The previous prime is 129071003. The next prime is 129071017. The reversal of 129071005 is 500170921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129071005 - 2¹ = 129071003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129071003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843837 + ... + 1843906.

It is an arithmetic number, because the mean of its divisors is an integer number (22126464).

Almost surely, 2^129071005 is an apocalyptic number.

It is an amenable number.

129071005 is a deficient number, since it is larger than the sum of its proper divisors (47940707).

129071005 is an equidigital number, since it uses as much as digits as its factorization.

129071005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687755.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 129071005 is about 11360.9420824155. The cubic root of 129071005 is about 505.3701237226.

The spelling of 129071005 in words is "one hundred twenty-nine million, seventy-one thousand, five".