129734712 has 24 divisors (see below), whose sum is σ = 351365040. Its totient is φ = 43244880.

The previous prime is 129734699. The next prime is 129734767. The reversal of 129734712 is 217437921.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 900864 + ... + 901007.

It is an arithmetic number, because the mean of its divisors is an integer number (14640210).

Almost surely, 2^129734712 is an apocalyptic number.

129734712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129734712 is an abundant number, since it is smaller than the sum of its proper divisors (221630328).

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

129734712 is a wasteful number, since it uses less digits than its factorization.

129734712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801883 (or 1801876 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 129734712 is about 11390.1146614071. The cubic root of 129734712 is about 506.2348787436.

The spelling of 129734712 in words is "one hundred twenty-nine million, seven hundred thirty-four thousand, seven hundred twelve".