129770 has 16 divisors (see below), whose sum is σ = 246240. Its totient is φ = 49104.

The previous prime is 129769. The next prime is 129793. The reversal of 129770 is 77921.

129770 is nontrivially palindromic in base 6.

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, 152 + ... + 531.

It is an arithmetic number, because the mean of its divisors is an integer number (15390).

2¹²⁹⁷⁷⁰ is an apocalyptic number.

129770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129770 is a deficient number, since it is larger than the sum of its proper divisors (116470).

129770 is a wasteful number, since it uses less digits than its factorization.

129770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 129770 is about 360.2360337334. The cubic root of 129770 is about 50.6280773418.

The spelling of 129770 in words is "one hundred twenty-nine thousand, seven hundred seventy".