129126632 has 32 divisors (see below), whose sum is σ = 245605800. Its totient is φ = 63638784.

The previous prime is 129126631. The next prime is 129126649. The reversal of 129126632 is 236621921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 124858276 + 4268356 = 11174^2 + 2066^2 .

It is not an unprimeable number, because it can be changed into a prime (129126631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325058 + ... + 325454.

Almost surely, 2^129126632 is an apocalyptic number.

It is an amenable number.

129126632 is a deficient number, since it is larger than the sum of its proper divisors (116479168).

129126632 is a wasteful number, since it uses less digits than its factorization.

129126632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 881 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 129126632 is about 11363.3899871473. The cubic root of 129126632 is about 505.4427147388.

The spelling of 129126632 in words is "one hundred twenty-nine million, one hundred twenty-six thousand, six hundred thirty-two".