129972334 has 8 divisors (see below), whose sum is σ = 198154728. Its totient is φ = 63920760.

The previous prime is 129972329. The next prime is 129972341. The reversal of 129972334 is 433279921.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532552 + ... + 532795.

It is an arithmetic number, because the mean of its divisors is an integer number (24769341).

Almost surely, 2^129972334 is an apocalyptic number.

129972334 is a deficient number, since it is larger than the sum of its proper divisors (68182394).

129972334 is a wasteful number, since it uses less digits than its factorization.

129972334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065410.

The product of its digits is 81648, while the sum is 40.

The square root of 129972334 is about 11400.5409520777. The cubic root of 129972334 is about 506.5437633758.

The spelling of 129972334 in words is "one hundred twenty-nine million, nine hundred seventy-two thousand, three hundred thirty-four".