342520 has 16 divisors (see below), whose sum is σ = 770760. Its totient is φ = 136992.

The previous prime is 342497. The next prime is 342521. The reversal of 342520 is 25243.

It is a d-powerful number, because it can be written as 3⁷ + 4³ + 5⁷ + 2¹⁷ + 2¹⁷ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 342494 and 342503.

It is a congruent number.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4242 + ... + 4321.

2³⁴²⁵²⁰ is an apocalyptic number.

It is an amenable number.

342520 is an abundant number, since it is smaller than the sum of its proper divisors (428240).

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

342520 is a wasteful number, since it uses less digits than its factorization.

342520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8574 (or 8570 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 342520 is about 585.2520824397. The cubic root of 342520 is about 69.9673316952.

Adding to 342520 its reverse (25243), we get a palindrome (367763).

The spelling of 342520 in words is "three hundred forty-two thousand, five hundred twenty".