129296412 has 144 divisors (see below), whose sum is σ = 400504832. Its totient is φ = 35691840.

The previous prime is 129296351. The next prime is 129296417. The reversal of 129296412 is 214692921.

129296412 is a `hidden beast` number, since 1 + 2 + 9 + 2 + 9 + 641 + 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 (129296417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 210618 + ... + 211230.

Almost surely, 2^129296412 is an apocalyptic number.

129296412 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 129296412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200252416).

129296412 is an abundant number, since it is smaller than the sum of its proper divisors (271208420).

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

129296412 is a wasteful number, since it uses less digits than its factorization.

129296412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 656 counting only the distinct ones).

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

The square root of 129296412 is about 11370.8580151192. The cubic root of 129296412 is about 505.6641420303.

The spelling of 129296412 in words is "one hundred twenty-nine million, two hundred ninety-six thousand, four hundred twelve".