129895 has 8 divisors (see below), whose sum is σ = 158256. Its totient is φ = 102336.

The previous prime is 129893. The next prime is 129901. The reversal of 129895 is 598921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129895 - 2¹ = 129893 is a prime.

It is a super-2 number, since 2×129895² = 33745422050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259 + ... + 571.

It is an arithmetic number, because the mean of its divisors is an integer number (19782).

2¹²⁹⁸⁹⁵ is an apocalyptic number.

129895 is a deficient number, since it is larger than the sum of its proper divisors (28361).

129895 is an equidigital number, since it uses as much as digits as its factorization.

129895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its digits is 6480, while the sum is 34.

The square root of 129895 is about 360.4094893312. The cubic root of 129895 is about 50.6443278331.

It can be divided in two parts, 129 and 895, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 129895 in words is "one hundred twenty-nine thousand, eight hundred ninety-five".