342278791 has 4 divisors (see below), whose sum is σ = 343447272. Its totient is φ = 341110312.

The previous prime is 342278779. The next prime is 342278819. The reversal of 342278791 is 197872243.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 342278791 - 2²⁵ = 308724359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342278771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583801 + ... + 584386.

It is an arithmetic number, because the mean of its divisors is an integer number (85861818).

Almost surely, 2^342278791 is an apocalyptic number.

342278791 is a deficient number, since it is larger than the sum of its proper divisors (1168481).

342278791 is a wasteful number, since it uses less digits than its factorization.

342278791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168480.

The product of its digits is 169344, while the sum is 43.

The square root of 342278791 is about 18500.7781187711. The cubic root of 342278791 is about 699.5090373641.

The spelling of 342278791 in words is "three hundred forty-two million, two hundred seventy-eight thousand, seven hundred ninety-one".