129572930 has 8 divisors (see below), whose sum is σ = 233231292. Its totient is φ = 51829168.

The previous prime is 129572917. The next prime is 129572981. The reversal of 129572930 is 39275921.

It can be written as a sum of positive squares in 2 ways, for example, as 126945289 + 2627641 = 11267^2 + 1621^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 6478637 + ... + 6478656.

Almost surely, 2^129572930 is an apocalyptic number.

129572930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129572930 is a deficient number, since it is larger than the sum of its proper divisors (103658362).

129572930 is a wasteful number, since it uses less digits than its factorization.

129572930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12957300.

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

The square root of 129572930 is about 11383.0105859566. The cubic root of 129572930 is about 506.0243625883.

The spelling of 129572930 in words is "one hundred twenty-nine million, five hundred seventy-two thousand, nine hundred thirty".