129063812 has 24 divisors (see below), whose sum is σ = 231783552. Its totient is φ = 62848800.

The previous prime is 129063811. The next prime is 129063817. The reversal of 129063812 is 218360921.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

Together with 102719740 it forms an amicable pair .

It is not an unprimeable number, because it can be changed into a prime (129063811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73262 + ... + 75002.

It is an arithmetic number, because the mean of its divisors is an integer number (9657648).

Almost surely, 2^129063812 is an apocalyptic number.

It is an amenable number.

129063812 is a deficient number, since it is larger than the sum of its proper divisors (102719740).

129063812 is a wasteful number, since it uses less digits than its factorization.

129063812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 129063812 is about 11360.6255109479. The cubic root of 129063812 is about 505.3607356218.

The spelling of 129063812 in words is "one hundred twenty-nine million, sixty-three thousand, eight hundred twelve".