342400427 has 2 divisors, whose sum is σ = 342400428. Its totient is φ = 342400426.

The previous prime is 342400393. The next prime is 342400433. The reversal of 342400427 is 724004243.

It is a strong prime.

It is an emirp because it is prime and its reverse (724004243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342400427 - 2¹⁰ = 342399403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 342400396 and 342400405.

It is not a weakly prime, because it can be changed into another prime (342400727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171200213 + 171200214.

It is an arithmetic number, because the mean of its divisors is an integer number (171200214).

Almost surely, 2^342400427 is an apocalyptic number.

342400427 is a deficient number, since it is larger than the sum of its proper divisors (1).

342400427 is an equidigital number, since it uses as much as digits as its factorization.

342400427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 342400427 is about 18504.0651479614. The cubic root of 342400427 is about 699.5918893224.

The spelling of 342400427 in words is "three hundred forty-two million, four hundred thousand, four hundred twenty-seven".