342189 has 12 divisors (see below), whose sum is σ = 499356. Its totient is φ = 225792.

The previous prime is 342187. The next prime is 342191. The reversal of 342189 is 981243.

It is an interprime number because it is at equal distance from previous prime (342187) and next prime (342191).

It can be written as a sum of positive squares in 2 ways, for example, as 233289 + 108900 = 483^2 + 330^2 .

It is not a de Polignac number, because 342189 - 2¹ = 342187 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1639 + ... + 1835.

It is an arithmetic number, because the mean of its divisors is an integer number (41613).

2³⁴²¹⁸⁹ is an apocalyptic number.

It is an amenable number.

342189 is a deficient number, since it is larger than the sum of its proper divisors (157167).

342189 is a wasteful number, since it uses less digits than its factorization.

342189 is an evil number, because the sum of its binary digits is even.

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

The product of its digits is 1728, while the sum is 27.

The square root of 342189 is about 584.9692299600. The cubic root of 342189 is about 69.9447863928.

The spelling of 342189 in words is "three hundred forty-two thousand, one hundred eighty-nine".