342789 has 8 divisors (see below), whose sum is σ = 460512. Its totient is φ = 226800.

The previous prime is 342761. The next prime is 342791. The reversal of 342789 is 987243.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 342789 - 2⁵ = 342757 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹¹ + 4⁵ + 7² + 2¹⁷ + 8⁵ + 9³ .

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139 + ... + 839.

It is an arithmetic number, because the mean of its divisors is an integer number (57564).

2³⁴²⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

342789 is a deficient number, since it is larger than the sum of its proper divisors (117723).

342789 is a wasteful number, since it uses less digits than its factorization.

342789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its digits is 12096, while the sum is 33.

The square root of 342789 is about 585.4818528358. The cubic root of 342789 is about 69.9856433142.

The spelling of 342789 in words is "three hundred forty-two thousand, seven hundred eighty-nine".