129971082 has 8 divisors (see below), whose sum is σ = 259942176. Its totient is φ = 43323692.

The previous prime is 129971071. The next prime is 129971087. The reversal of 129971082 is 280179921.

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

129971082 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 129971082.

It is not an unprimeable number, because it can be changed into a prime (129971087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10830918 + ... + 10830929.

It is an arithmetic number, because the mean of its divisors is an integer number (32492772).

Almost surely, 2^129971082 is an apocalyptic number.

129971082 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129971082 is a wasteful number, since it uses less digits than its factorization.

129971082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21661852.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 129971082 is about 11400.4860422703. The cubic root of 129971082 is about 506.5421368891.

The spelling of 129971082 in words is "one hundred twenty-nine million, nine hundred seventy-one thousand, eighty-two".