129995 has 4 divisors (see below), whose sum is σ = 156000. Its totient is φ = 103992.

The previous prime is 129971. The next prime is 130003. The reversal of 129995 is 599921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 599921 = 7 ⋅85703.

It is a cyclic number.

It is not a de Polignac number, because 129995 - 2¹⁰ = 128971 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12995 + ... + 13004.

It is an arithmetic number, because the mean of its divisors is an integer number (39000).

2¹²⁹⁹⁹⁵ is an apocalyptic number.

129995 is a deficient number, since it is larger than the sum of its proper divisors (26005).

129995 is an equidigital number, since it uses as much as digits as its factorization.

129995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26004.

The product of its digits is 7290, while the sum is 35.

The square root of 129995 is about 360.5481937273. The cubic root of 129995 is about 50.6573207215.

The spelling of 129995 in words is "one hundred twenty-nine thousand, nine hundred ninety-five".