129539270 has 16 divisors (see below), whose sum is σ = 266480928. Its totient is φ = 44413440.

The previous prime is 129539231. The next prime is 129539273. The reversal of 129539270 is 72935921.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129539273) 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, 925211 + ... + 925350.

It is an arithmetic number, because the mean of its divisors is an integer number (16655058).

Almost surely, 2^129539270 is an apocalyptic number.

129539270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129539270 is an abundant number, since it is smaller than the sum of its proper divisors (136941658).

129539270 is a wasteful number, since it uses less digits than its factorization.

129539270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850575.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 129539270 is about 11381.5319706971. The cubic root of 129539270 is about 505.9805410505.

The spelling of 129539270 in words is "one hundred twenty-nine million, five hundred thirty-nine thousand, two hundred seventy".