342091 has 4 divisors (see below), whose sum is σ = 362232. Its totient is φ = 321952.

The previous prime is 342077. The next prime is 342101. The reversal of 342091 is 190243.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 342091 - 2⁵ = 342059 is a prime.

It is a Duffinian number.

342091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (342061) 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, 10045 + ... + 10078.

It is an arithmetic number, because the mean of its divisors is an integer number (90558).

2³⁴²⁰⁹¹ is an apocalyptic number.

342091 is a deficient number, since it is larger than the sum of its proper divisors (20141).

342091 is a wasteful number, since it uses less digits than its factorization.

342091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20140.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 342091 is about 584.8854588721. The cubic root of 342091 is about 69.9381085593.

The spelling of 342091 in words is "three hundred forty-two thousand, ninety-one".