342020 has 36 divisors (see below), whose sum is σ = 837900. Its totient is φ = 116928.

The previous prime is 341993. The next prime is 342037. The reversal of 342020 is 20243.

It can be written as a sum of positive squares in 2 ways, for example, as 188356 + 153664 = 434^2 + 392^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 341992 and 342010.

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, 806 + ... + 1154.

It is an arithmetic number, because the mean of its divisors is an integer number (23275).

2³⁴²⁰²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418950).

342020 is an abundant number, since it is smaller than the sum of its proper divisors (495880).

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

342020 is a wasteful number, since it uses less digits than its factorization.

342020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 342020 is about 584.8247600778. The cubic root of 342020 is about 69.9332697403.

Adding to 342020 its reverse (20243), we get a palindrome (362263).

The spelling of 342020 in words is "three hundred forty-two thousand, twenty", and thus it is an iban number.