342440 has 32 divisors (see below), whose sum is σ = 881280. Its totient is φ = 117312.

The previous prime is 342421. The next prime is 342449. The reversal of 342440 is 44243.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342440.

It is not an unprimeable number, because it can be changed into a prime (342449) by changing a digit.

342440 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332 + ... + 891.

It is an arithmetic number, because the mean of its divisors is an integer number (27540).

2³⁴²⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

342440 is an abundant number, since it is smaller than the sum of its proper divisors (538840).

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

342440 is a wasteful number, since it uses less digits than its factorization.

342440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 342440 is about 585.1837318313. The cubic root of 342440 is about 69.9618840110.

Adding to 342440 its reverse (44243), we get a palindrome (386683).

The spelling of 342440 in words is "three hundred forty-two thousand, four hundred forty", and thus it is an iban number.