342690 has 16 divisors (see below), whose sum is σ = 822528. Its totient is φ = 91376.

The previous prime is 342679. The next prime is 342691. The reversal of 342690 is 96243.

It is a super-2 number, since 2×342690² = 234872872200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 342690.

It is not an unprimeable number, because it can be changed into a prime (342691) by changing a digit.

342690 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5682 + ... + 5741.

It is an arithmetic number, because the mean of its divisors is an integer number (51408).

2³⁴²⁶⁹⁰ is an apocalyptic number.

342690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

342690 is an abundant number, since it is smaller than the sum of its proper divisors (479838).

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

342690 is a wasteful number, since it uses less digits than its factorization.

342690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11433.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 342690 is about 585.3973009846. The cubic root of 342690 is about 69.9789052083.

The spelling of 342690 in words is "three hundred forty-two thousand, six hundred ninety".