129670212 has 96 divisors (see below), whose sum is σ = 367718400. Its totient is φ = 34739712.

The previous prime is 129670207. The next prime is 129670213. The reversal of 129670212 is 212076921.

It is a self number, because there is not a number n which added to its sum of digits gives 129670212.

It is not an unprimeable number, because it can be changed into a prime (129670213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179989 + ... + 180707.

It is an arithmetic number, because the mean of its divisors is an integer number (3830400).

Almost surely, 2^129670212 is an apocalyptic number.

129670212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129670212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183859200).

129670212 is an abundant number, since it is smaller than the sum of its proper divisors (238048188).

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

129670212 is a wasteful number, since it uses less digits than its factorization.

129670212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 129670212 is about 11387.2829068220. The cubic root of 129670212 is about 506.1509701739.

The spelling of 129670212 in words is "one hundred twenty-nine million, six hundred seventy thousand, two hundred twelve".