129001735 has 16 divisors (see below), whose sum is σ = 166030560. Its totient is φ = 95921280.

The previous prime is 129001727. The next prime is 129001739. The reversal of 129001735 is 537100921.

It is not a de Polignac number, because 129001735 - 2³ = 129001727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129001739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7776 + ... + 17845.

It is an arithmetic number, because the mean of its divisors is an integer number (10376910).

Almost surely, 2^129001735 is an apocalyptic number.

129001735 is a deficient number, since it is larger than the sum of its proper divisors (37028825).

129001735 is a wasteful number, since it uses less digits than its factorization.

129001735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25698.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 129001735 is about 11357.8930704599. The cubic root of 129001735 is about 505.2796999726.

The spelling of 129001735 in words is "one hundred twenty-nine million, one thousand, seven hundred thirty-five".