342040 has 32 divisors (see below), whose sum is σ = 816480. Its totient is φ = 128512.

The previous prime is 342037. The next prime is 342047. The reversal of 342040 is 40243.

It is a self number, because there is not a number n which added to its sum of digits gives 342040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429 + ... + 931.

It is an arithmetic number, because the mean of its divisors is an integer number (25515).

2³⁴²⁰⁴⁰ 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 342040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408240).

342040 is an abundant number, since it is smaller than the sum of its proper divisors (474440).

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

342040 is a wasteful number, since it uses less digits than its factorization.

342040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 342040 is about 584.8418589670. The cubic root of 342040 is about 69.9346328556.

Adding to 342040 its reverse (40243), we get a palindrome (382283).

The spelling of 342040 in words is "three hundred forty-two thousand, forty", and thus it is an iban number.