342842191 has 2 divisors, whose sum is σ = 342842192. Its totient is φ = 342842190.

The previous prime is 342842189. The next prime is 342842243. The reversal of 342842191 is 191248243.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 342842191 - 2¹ = 342842189 is a prime.

Together with 342842189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346842191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171421095 + 171421096.

It is an arithmetic number, because the mean of its divisors is an integer number (171421096).

Almost surely, 2^342842191 is an apocalyptic number.

342842191 is a deficient number, since it is larger than the sum of its proper divisors (1).

342842191 is an equidigital number, since it uses as much as digits as its factorization.

342842191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 342842191 is about 18515.9982447612. The cubic root of 342842191 is about 699.8926304707.

The spelling of 342842191 in words is "three hundred forty-two million, eight hundred forty-two thousand, one hundred ninety-one".