342129 has 4 divisors (see below), whose sum is σ = 456176. Its totient is φ = 228084.

The previous prime is 342107. The next prime is 342131. The reversal of 342129 is 921243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 342129 - 2⁹ = 341617 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 6.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342129.

It is not an unprimeable number, because it can be changed into a prime (342179) 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, 57019 + ... + 57024.

It is an arithmetic number, because the mean of its divisors is an integer number (114044).

2³⁴²¹²⁹ is an apocalyptic number.

It is an amenable number.

342129 is a deficient number, since it is larger than the sum of its proper divisors (114047).

342129 is a wasteful number, since it uses less digits than its factorization.

342129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114046.

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

The square root of 342129 is about 584.9179429629. The cubic root of 342129 is about 69.9406980747.

The spelling of 342129 in words is "three hundred forty-two thousand, one hundred twenty-nine".