342015 has 12 divisors (see below), whose sum is σ = 550872. Its totient is φ = 181200.

The previous prime is 341993. The next prime is 342037. The reversal of 342015 is 510243.

It is an interprime number because it is at equal distance from previous prime (341993) and next prime (342037).

It is not a de Polignac number, because 342015 - 2⁵ = 341983 is a prime.

It is a hoax number, since the sum of its digits (15) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (15).

342015 is a lucky number.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 341985 and 342003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2190 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (45906).

2³⁴²⁰¹⁵ is an apocalyptic number.

342015 is a deficient number, since it is larger than the sum of its proper divisors (208857).

342015 is an equidigital number, since it uses as much as digits as its factorization.

342015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 342015 is about 584.8204852773. The cubic root of 342015 is about 69.9329289532.

Multiplying 342015 by its sum of digits (15), we get a square (5130225 = 2265²).

342015 divided by its sum of digits (15) gives a square (22801 = 151²).

Adding to 342015 its reverse (510243), we get a palindrome (852258).

The spelling of 342015 in words is "three hundred forty-two thousand, fifteen".