129964212 has 72 divisors (see below), whose sum is σ = 383475456. Its totient is φ = 36339264.

The previous prime is 129964193. The next prime is 129964213. The reversal of 129964212 is 212469921.

129964212 is a `hidden beast` number, since 1 + 2 + 9 + 9 + 642 + 1 + 2 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129964213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6358 + ... + 17330.

It is an arithmetic number, because the mean of its divisors is an integer number (5326048).

Almost surely, 2^129964212 is an apocalyptic number.

129964212 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 129964212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191737728).

129964212 is an abundant number, since it is smaller than the sum of its proper divisors (253511244).

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

129964212 is a wasteful number, since it uses less digits than its factorization.

129964212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11037 (or 11032 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 129964212 is about 11400.1847353453. The cubic root of 129964212 is about 506.5332118120.

The spelling of 129964212 in words is "one hundred twenty-nine million, nine hundred sixty-four thousand, two hundred twelve".