342786 has 8 divisors (see below), whose sum is σ = 685584. Its totient is φ = 114260.

The previous prime is 342761. The next prime is 342791. The reversal of 342786 is 687243.

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

342786 is an admirable number.

It is an unprimeable number.

342786 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 3 ways as a sum of consecutive naturals, for example, 28560 + ... + 28571.

It is an arithmetic number, because the mean of its divisors is an integer number (85698).

2³⁴²⁷⁸⁶ is an apocalyptic number.

342786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

342786 is a wasteful number, since it uses less digits than its factorization.

342786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57136.

The product of its digits is 8064, while the sum is 30.

The square root of 342786 is about 585.4792908379. The cubic root of 342786 is about 69.9854391482.

It can be divided in two parts, 342 and 786, that added together give a triangular number (1128 = T₄₇).

The spelling of 342786 in words is "three hundred forty-two thousand, seven hundred eighty-six".