129577941 has 16 divisors (see below), whose sum is σ = 192837120. Its totient is φ = 85993920.

The previous prime is 129577939. The next prime is 129577949. The reversal of 129577941 is 149775921.

It is not a de Polignac number, because 129577941 - 2¹ = 129577939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129577949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4740 + ... + 16781.

It is an arithmetic number, because the mean of its divisors is an integer number (12052320).

Almost surely, 2^129577941 is an apocalyptic number.

It is an amenable number.

129577941 is a deficient number, since it is larger than the sum of its proper divisors (63259179).

129577941 is a wasteful number, since it uses less digits than its factorization.

129577941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21753 (or 21747 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 129577941 is about 11383.2306925582. The cubic root of 129577941 is about 506.0308856982.

The spelling of 129577941 in words is "one hundred twenty-nine million, five hundred seventy-seven thousand, nine hundred forty-one".