342489 has 16 divisors (see below), whose sum is σ = 534528. Its totient is φ = 190992.

The previous prime is 342481. The next prime is 342497. The reversal of 342489 is 984243.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (342481) and next prime (342497).

It is not a de Polignac number, because 342489 - 2³ = 342481 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814 + ... + 1160.

It is an arithmetic number, because the mean of its divisors is an integer number (33408).

2³⁴²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

342489 is a deficient number, since it is larger than the sum of its proper divisors (192039).

342489 is a wasteful number, since it uses less digits than its factorization.

342489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404.

The product of its digits is 6912, while the sum is 30.

The square root of 342489 is about 585.2255975263. The cubic root of 342489 is about 69.9652208182.

The spelling of 342489 in words is "three hundred forty-two thousand, four hundred eighty-nine".