342643479 has 32 divisors (see below), whose sum is σ = 478114560. Its totient is φ = 218115072.

The previous prime is 342643471. The next prime is 342643481. The reversal of 342643479 is 974346243.

It is a happy number.

It is not a de Polignac number, because 342643479 - 2³ = 342643471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 342643479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342643471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1739209 + ... + 1739405.

It is an arithmetic number, because the mean of its divisors is an integer number (14941080).

Almost surely, 2^342643479 is an apocalyptic number.

342643479 is a deficient number, since it is larger than the sum of its proper divisors (135471081).

342643479 is a wasteful number, since it uses less digits than its factorization.

342643479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479.

The product of its digits is 435456, while the sum is 42.

The square root of 342643479 is about 18510.6315127280. The cubic root of 342643479 is about 699.7573846283.

The spelling of 342643479 in words is "three hundred forty-two million, six hundred forty-three thousand, four hundred seventy-nine".