342239840 has 24 divisors (see below), whose sum is σ = 808542000. Its totient is φ = 136895872.

The previous prime is 342239827. The next prime is 342239861. The reversal of 342239840 is 48932243.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 342239840.

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 3 ways as a sum of consecutive naturals, for example, 1069340 + ... + 1069659.

It is an arithmetic number, because the mean of its divisors is an integer number (33689250).

Almost surely, 2^342239840 is an apocalyptic number.

It is an amenable number.

342239840 is an abundant number, since it is smaller than the sum of its proper divisors (466302160).

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

342239840 is a wasteful number, since it uses less digits than its factorization.

342239840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139014 (or 2139006 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 342239840 is about 18499.7254033675. The cubic root of 342239840 is about 699.4825018704.

The spelling of 342239840 in words is "three hundred forty-two million, two hundred thirty-nine thousand, eight hundred forty".