129565036 has 18 divisors (see below), whose sum is σ = 228427220. Its totient is φ = 64303632.

The previous prime is 129565021. The next prime is 129565057. The reversal of 129565036 is 630565921.

It is a junction number, because it is equal to n+sod(n) for n = 129564986 and 129565004.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 88075 + ... + 89533.

Almost surely, 2^129565036 is an apocalyptic number.

It is an amenable number.

129565036 is a deficient number, since it is larger than the sum of its proper divisors (98862184).

129565036 is a wasteful number, since it uses less digits than its factorization.

129565036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 129565036 is about 11382.6638358514. The cubic root of 129565036 is about 506.0140861686.

The spelling of 129565036 in words is "one hundred twenty-nine million, five hundred sixty-five thousand, thirty-six".