342523 has 4 divisors (see below), whose sum is σ = 343728. Its totient is φ = 341320.

The previous prime is 342521. The next prime is 342527. The reversal of 342523 is 325243.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 342523 - 2¹ = 342521 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3 + 4³ + 5⁷ + 2¹⁷ + 2¹⁷ + 3⁷ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 342523.

It is not an unprimeable number, because it can be changed into a prime (342521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90 + ... + 832.

It is an arithmetic number, because the mean of its divisors is an integer number (85932).

2³⁴²⁵²³ is an apocalyptic number.

342523 is a deficient number, since it is larger than the sum of its proper divisors (1205).

342523 is an equidigital number, since it uses as much as digits as its factorization.

342523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204.

The product of its digits is 720, while the sum is 19.

The square root of 342523 is about 585.2546454322. The cubic root of 342523 is about 69.9675359668.

Adding to 342523 its reverse (325243), we get a palindrome (667766).

The spelling of 342523 in words is "three hundred forty-two thousand, five hundred twenty-three".