342815 has 16 divisors (see below), whose sum is σ = 470016. Its totient is φ = 237600.

The previous prime is 342803. The next prime is 342821. The reversal of 342815 is 518243.

It is not a de Polignac number, because 342815 - 2⁴ = 342799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1130 + ... + 1400.

It is an arithmetic number, because the mean of its divisors is an integer number (29376).

2³⁴²⁸¹⁵ is an apocalyptic number.

342815 is a deficient number, since it is larger than the sum of its proper divisors (127201).

342815 is a wasteful number, since it uses less digits than its factorization.

342815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its digits is 960, while the sum is 23.

The square root of 342815 is about 585.5040563480. The cubic root of 342815 is about 69.9874127027.

It can be divided in two parts, 34281 and 5, that multiplied together give a triangular number (171405 = T₅₈₅).

The spelling of 342815 in words is "three hundred forty-two thousand, eight hundred fifteen".