129087044 has 24 divisors (see below), whose sum is σ = 231336000. Its totient is φ = 63006560.

The previous prime is 129087037. The next prime is 129087061. The reversal of 129087044 is 440780921.

It is a junction number, because it is equal to n+sod(n) for n = 129086995 and 129087013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33329 + ... + 36999.

It is an arithmetic number, because the mean of its divisors is an integer number (9639000).

Almost surely, 2^129087044 is an apocalyptic number.

It is an amenable number.

129087044 is a deficient number, since it is larger than the sum of its proper divisors (102248956).

129087044 is a wasteful number, since it uses less digits than its factorization.

129087044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883 (or 3881 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 129087044 is about 11361.6479438504. The cubic root of 129087044 is about 505.3910561174.

The spelling of 129087044 in words is "one hundred twenty-nine million, eighty-seven thousand, forty-four".