342004391 has 2 divisors, whose sum is σ = 342004392. Its totient is φ = 342004390.

The previous prime is 342004367. The next prime is 342004433. The reversal of 342004391 is 193400243.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 342004391 - 2¹⁰ = 342003367 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 342004391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342004321) 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 as a sum of consecutive naturals, namely, 171002195 + 171002196.

It is an arithmetic number, because the mean of its divisors is an integer number (171002196).

Almost surely, 2^342004391 is an apocalyptic number.

342004391 is a deficient number, since it is larger than the sum of its proper divisors (1).

342004391 is an equidigital number, since it uses as much as digits as its factorization.

342004391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 342004391 is about 18493.3607275692. The cubic root of 342004391 is about 699.3220586000.

The spelling of 342004391 in words is "three hundred forty-two million, four thousand, three hundred ninety-one".