129342 has 8 divisors (see below), whose sum is σ = 258696. Its totient is φ = 43112.

The previous prime is 129341. The next prime is 129347. The reversal of 129342 is 243921.

129342 is nontrivially palindromic in base 12.

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

129342 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10773 + ... + 10784.

It is an arithmetic number, because the mean of its divisors is an integer number (32337).

2¹²⁹³⁴² is an apocalyptic number.

129342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129342 is a wasteful number, since it uses less digits than its factorization.

129342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21562.

The product of its digits is 432, while the sum is 21.

The square root of 129342 is about 359.6414881517. The cubic root of 129342 is about 50.5723564943.

The spelling of 129342 in words is "one hundred twenty-nine thousand, three hundred forty-two".