342878438 has 32 divisors (see below), whose sum is σ = 601032960. Its totient is φ = 143667360.

The previous prime is 342878399. The next prime is 342878447. The reversal of 342878438 is 834878243.

It is a junction number, because it is equal to n+sod(n) for n = 342878392 and 342878401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151745 + ... + 153987.

It is an arithmetic number, because the mean of its divisors is an integer number (18782280).

Almost surely, 2^342878438 is an apocalyptic number.

342878438 is a deficient number, since it is larger than the sum of its proper divisors (258154522).

342878438 is a wasteful number, since it uses less digits than its factorization.

342878438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492.

The product of its digits is 1032192, while the sum is 47.

The square root of 342878438 is about 18516.9770211015. The cubic root of 342878438 is about 699.9172949907.

The spelling of 342878438 in words is "three hundred forty-two million, eight hundred seventy-eight thousand, four hundred thirty-eight".