342643842 has 18 divisors (see below), whose sum is σ = 742565187. Its totient is φ = 114188436.

The previous prime is 342643831. The next prime is 342643843. The reversal of 342643842 is 248346243.

342643842 is a `hidden beast` number, since 3 + 4 + 2 + 643 + 8 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 171321921 + 171321921 = 13089^2 + 13089^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=13089.

It is a junction number, because it is equal to n+sod(n) for n = 342643797 and 342643806.

It is not an unprimeable number, because it can be changed into a prime (342643843) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 76353 + ... + 80715.

Almost surely, 2^342643842 is an apocalyptic number.

342643842 is an abundant number, since it is smaller than the sum of its proper divisors (399921345).

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

342643842 is an frugal number, since it uses more digits than its factorization.

342643842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8734 (or 4368 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 342643842 is about 18510.6413179014. The cubic root of 342643842 is about 699.7576317383.

It can be divided in two parts, 34 and 2643842, that added together give a square (2643876 = 1626²).

The spelling of 342643842 in words is "three hundred forty-two million, six hundred forty-three thousand, eight hundred forty-two".