342081 has 12 divisors (see below), whose sum is σ = 499200. Its totient is φ = 225720.

The previous prime is 342077. The next prime is 342101. The reversal of 342081 is 180243.

It is a happy number.

It is not a de Polignac number, because 342081 - 2² = 342077 is a prime.

It is a super-2 number, since 2×342081² = 234038821122, which contains 22 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342081.

It is not an unprimeable number, because it can be changed into a prime (342061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1620 + ... + 1818.

It is an arithmetic number, because the mean of its divisors is an integer number (41600).

2³⁴²⁰⁸¹ is an apocalyptic number.

It is an amenable number.

342081 is a deficient number, since it is larger than the sum of its proper divisors (157119).

342081 is a wasteful number, since it uses less digits than its factorization.

342081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 342081 is about 584.8769101273. The cubic root of 342081 is about 69.9374270760.

The spelling of 342081 in words is "three hundred forty-two thousand, eighty-one".