129077133 has 4 divisors (see below), whose sum is σ = 172102848. Its totient is φ = 86051420.

The previous prime is 129077111. The next prime is 129077161. The reversal of 129077133 is 331770921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129077133 - 2¹⁰ = 129076109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129077094 and 129077103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129077183) 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, 21512853 + ... + 21512858.

It is an arithmetic number, because the mean of its divisors is an integer number (43025712).

Almost surely, 2^129077133 is an apocalyptic number.

It is an amenable number.

129077133 is a deficient number, since it is larger than the sum of its proper divisors (43025715).

129077133 is an equidigital number, since it uses as much as digits as its factorization.

129077133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43025714.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 129077133 is about 11361.2117751585. The cubic root of 129077133 is about 505.3781215403.

The spelling of 129077133 in words is "one hundred twenty-nine million, seventy-seven thousand, one hundred thirty-three".