129977035 has 4 divisors (see below), whose sum is σ = 155972448. Its totient is φ = 103981624.

The previous prime is 129977033. The next prime is 129977047. The reversal of 129977035 is 530779921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129977035 - 2¹ = 129977033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129976982 and 129977000.

It is not an unprimeable number, because it can be changed into a prime (129977033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12997699 + ... + 12997708.

It is an arithmetic number, because the mean of its divisors is an integer number (38993112).

Almost surely, 2^129977035 is an apocalyptic number.

129977035 is a deficient number, since it is larger than the sum of its proper divisors (25995413).

129977035 is an equidigital number, since it uses as much as digits as its factorization.

129977035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25995412.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 129977035 is about 11400.7471246406. The cubic root of 129977035 is about 506.5498704025.

The spelling of 129977035 in words is "one hundred twenty-nine million, nine hundred seventy-seven thousand, thirty-five".