342400393 has 2 divisors, whose sum is σ = 342400394. Its totient is φ = 342400392.

The previous prime is 342400391. The next prime is 342400427. The reversal of 342400393 is 393004243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323712064 + 18688329 = 17992^2 + 4323^2 .

It is a cyclic number.

It is not a de Polignac number, because 342400393 - 2¹ = 342400391 is a prime.

Together with 342400391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (342400391) 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, 171200196 + 171200197.

It is an arithmetic number, because the mean of its divisors is an integer number (171200197).

Almost surely, 2^342400393 is an apocalyptic number.

It is an amenable number.

342400393 is a deficient number, since it is larger than the sum of its proper divisors (1).

342400393 is an equidigital number, since it uses as much as digits as its factorization.

342400393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 342400393 is about 18504.0642292443. The cubic root of 342400393 is about 699.5918661661.

The spelling of 342400393 in words is "three hundred forty-two million, four hundred thousand, three hundred ninety-three".