129532012 has 12 divisors (see below), whose sum is σ = 233993536. Its totient is φ = 62676720.

The previous prime is 129532001. The next prime is 129532019. The reversal of 129532012 is 210235921.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (129532019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522183 + ... + 522430.

Almost surely, 2^129532012 is an apocalyptic number.

It is an amenable number.

129532012 is a deficient number, since it is larger than the sum of its proper divisors (104461524).

129532012 is a wasteful number, since it uses less digits than its factorization.

129532012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044648 (or 1044646 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 129532012 is about 11381.2131163598. The cubic root of 129532012 is about 505.9710909552.

Adding to 129532012 its reverse (210235921), we get a palindrome (339767933).

The spelling of 129532012 in words is "one hundred twenty-nine million, five hundred thirty-two thousand, twelve".