342878 has 4 divisors (see below), whose sum is σ = 514320. Its totient is φ = 171438.

The previous prime is 342871. The next prime is 342889. The reversal of 342878 is 878243.

342878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 878243 = 79 ⋅11117.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342878.

It is not an unprimeable number, because it can be changed into a prime (342871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85718 + ... + 85721.

It is an arithmetic number, because the mean of its divisors is an integer number (128580).

2³⁴²⁸⁷⁸ is an apocalyptic number.

342878 is a deficient number, since it is larger than the sum of its proper divisors (171442).

342878 is a wasteful number, since it uses less digits than its factorization.

342878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171441.

The product of its digits is 10752, while the sum is 32.

The square root of 342878 is about 585.5578536746. The cubic root of 342878 is about 69.9916996961.

The spelling of 342878 in words is "three hundred forty-two thousand, eight hundred seventy-eight".