342691409 has 2 divisors, whose sum is σ = 342691410. Its totient is φ = 342691408.

The previous prime is 342691357. The next prime is 342691441. The reversal of 342691409 is 904196243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259371025 + 83320384 = 16105^2 + 9128^2 .

It is a cyclic number.

It is not a de Polignac number, because 342691409 - 2²⁸ = 74255953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (342691499) 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, 171345704 + 171345705.

It is an arithmetic number, because the mean of its divisors is an integer number (171345705).

Almost surely, 2^342691409 is an apocalyptic number.

It is an amenable number.

342691409 is a deficient number, since it is larger than the sum of its proper divisors (1).

342691409 is an equidigital number, since it uses as much as digits as its factorization.

342691409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 342691409 is about 18511.9261288500. The cubic root of 342691409 is about 699.7900111627.

The spelling of 342691409 in words is "three hundred forty-two million, six hundred ninety-one thousand, four hundred nine".