129536005 has 8 divisors (see below), whose sum is σ = 164587032. Its totient is φ = 97532928.

The previous prime is 129535979. The next prime is 129536047. The reversal of 129536005 is 500635921.

It can be written as a sum of positive squares in 4 ways, for example, as 57047809 + 72488196 = 7553^2 + 8514^2 .

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 129536005 - 2⁷ = 129535877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 761892 + ... + 762061.

It is an arithmetic number, because the mean of its divisors is an integer number (20573379).

Almost surely, 2^129536005 is an apocalyptic number.

It is an amenable number.

129536005 is a deficient number, since it is larger than the sum of its proper divisors (35051027).

129536005 is a wasteful number, since it uses less digits than its factorization.

129536005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523975.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 129536005 is about 11381.3885356752. The cubic root of 129536005 is about 505.9762899835.

The spelling of 129536005 in words is "one hundred twenty-nine million, five hundred thirty-six thousand, five".