342321289 has 2 divisors, whose sum is σ = 342321290. Its totient is φ = 342321288.

The previous prime is 342321281. The next prime is 342321311. The reversal of 342321289 is 982123243.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342250000 + 71289 = 18500^2 + 267^2 .

It is a cyclic number.

It is not a de Polignac number, because 342321289 - 2³ = 342321281 is a prime.

It is not a weakly prime, because it can be changed into another prime (342321281) 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, 171160644 + 171160645.

It is an arithmetic number, because the mean of its divisors is an integer number (171160645).

Almost surely, 2^342321289 is an apocalyptic number.

It is an amenable number.

342321289 is a deficient number, since it is larger than the sum of its proper divisors (1).

342321289 is an equidigital number, since it uses as much as digits as its factorization.

342321289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 342321289 is about 18501.9266294081. The cubic root of 342321289 is about 699.5379869666.

The spelling of 342321289 in words is "three hundred forty-two million, three hundred twenty-one thousand, two hundred eighty-nine".