129958 has 8 divisors (see below), whose sum is σ = 196560. Its totient is φ = 64440.

The previous prime is 129953. The next prime is 129959. The reversal of 129958 is 859921.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129953) by changing a digit.

129958 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183 + ... + 541.

It is an arithmetic number, because the mean of its divisors is an integer number (24570).

2¹²⁹⁹⁵⁸ is an apocalyptic number.

129958 is a deficient number, since it is larger than the sum of its proper divisors (66602).

129958 is a wasteful number, since it uses less digits than its factorization.

129958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542.

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

The square root of 129958 is about 360.4968793208. The cubic root of 129958 is about 50.6525141297.

The spelling of 129958 in words is "one hundred twenty-nine thousand, nine hundred fifty-eight".