129487132 has 6 divisors (see below), whose sum is σ = 226602488. Its totient is φ = 64743564.

The previous prime is 129487129. The next prime is 129487133. The reversal of 129487132 is 231784921.

129487132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 129487091 and 129487100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129487133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16185888 + ... + 16185895.

Almost surely, 2^129487132 is an apocalyptic number.

It is an amenable number.

129487132 is a deficient number, since it is larger than the sum of its proper divisors (97115356).

129487132 is a wasteful number, since it uses less digits than its factorization.

129487132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32371787 (or 32371785 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 129487132 is about 11379.2412752345. The cubic root of 129487132 is about 505.9126482446.

The spelling of 129487132 in words is "one hundred twenty-nine million, four hundred eighty-seven thousand, one hundred thirty-two".