129719672 has 16 divisors (see below), whose sum is σ = 247212600. Its totient is φ = 63796320.

The previous prime is 129719663. The next prime is 129719677. The reversal of 129719672 is 276917921.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129719677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132422 + ... + 133397.

Almost surely, 2^129719672 is an apocalyptic number.

It is an amenable number.

129719672 is a deficient number, since it is larger than the sum of its proper divisors (117492928).

129719672 is a wasteful number, since it uses less digits than its factorization.

129719672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265886 (or 265882 counting only the distinct ones).

The product of its digits is 95256, while the sum is 44.

The square root of 129719672 is about 11389.4544206472. The cubic root of 129719672 is about 506.2153155732.

The spelling of 129719672 in words is "one hundred twenty-nine million, seven hundred nineteen thousand, six hundred seventy-two".