342390 has 32 divisors (see below), whose sum is σ = 837216. Its totient is φ = 89600.

The previous prime is 342389. The next prime is 342413. The reversal of 342390 is 93243.

It is a plaindrome in base 8.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2974 + ... + 3086.

It is an arithmetic number, because the mean of its divisors is an integer number (26163).

2³⁴²³⁹⁰ is an apocalyptic number.

342390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

342390 is an abundant number, since it is smaller than the sum of its proper divisors (494826).

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

342390 is a wasteful number, since it uses less digits than its factorization.

342390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 342390 is about 585.1410086466. The cubic root of 342390 is about 69.9584787775.

The spelling of 342390 in words is "three hundred forty-two thousand, three hundred ninety".