129954 has 24 divisors (see below), whose sum is σ = 287280. Its totient is φ = 39160.

The previous prime is 129953. The next prime is 129959. The reversal of 129954 is 459921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129953) 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 11 ways as a sum of consecutive naturals, for example, 637 + ... + 815.

It is an arithmetic number, because the mean of its divisors is an integer number (11970).

2¹²⁹⁹⁵⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143640).

129954 is an abundant number, since it is smaller than the sum of its proper divisors (157326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129954 is a wasteful number, since it uses less digits than its factorization.

129954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 195 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 129954 is about 360.4913313798. The cubic root of 129954 is about 50.6519944435.

The spelling of 129954 in words is "one hundred twenty-nine thousand, nine hundred fifty-four".