129086 has 16 divisors (see below), whose sum is σ = 211200. Its totient is φ = 58968.

The previous prime is 129083. The next prime is 129089. The reversal of 129086 is 680921.

129086 = T₁₆ + T₁₇ + ... + T₉₁.

129086 is nontrivially palindromic in base 6.

It is an interprime number because it is at equal distance from previous prime (129083) and next prime (129089).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1595 + ... + 1673.

It is an arithmetic number, because the mean of its divisors is an integer number (13200).

2¹²⁹⁰⁸⁶ is an apocalyptic number.

129086 is a deficient number, since it is larger than the sum of its proper divisors (82114).

129086 is a wasteful number, since it uses less digits than its factorization.

129086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 129086 is about 359.2854018743. The cubic root of 129086 is about 50.5389693653.

The spelling of 129086 in words is "one hundred twenty-nine thousand, eighty-six".