129071039 has 2 divisors, whose sum is σ = 129071040. Its totient is φ = 129071038.

The previous prime is 129071027. The next prime is 129071053. The reversal of 129071039 is 930170921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129071039 - 2⁴ = 129071023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129070996 and 129071014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129071099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64535519 + 64535520.

It is an arithmetic number, because the mean of its divisors is an integer number (64535520).

Almost surely, 2^129071039 is an apocalyptic number.

129071039 is a deficient number, since it is larger than the sum of its proper divisors (1).

129071039 is an equidigital number, since it uses as much as digits as its factorization.

129071039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 129071039 is about 11360.9435787702. The cubic root of 129071039 is about 505.3701680976.

The spelling of 129071039 in words is "one hundred twenty-nine million, seventy-one thousand, thirty-nine".