340128073 has 2 divisors, whose sum is σ = 340128074. Its totient is φ = 340128072.

The previous prime is 340128067. The next prime is 340128091. The reversal of 340128073 is 370821043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335146249 + 4981824 = 18307^2 + 2232^2 .

It is a cyclic number.

It is not a de Polignac number, because 340128073 - 2¹³ = 340119881 is a prime.

It is not a weakly prime, because it can be changed into another prime (340128043) 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, 170064036 + 170064037.

It is an arithmetic number, because the mean of its divisors is an integer number (170064037).

Almost surely, 2^340128073 is an apocalyptic number.

It is an amenable number.

340128073 is a deficient number, since it is larger than the sum of its proper divisors (1).

340128073 is an equidigital number, since it uses as much as digits as its factorization.

340128073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 340128073 is about 18442.5614544184. The cubic root of 340128073 is about 698.0408299255.

The spelling of 340128073 in words is "three hundred forty million, one hundred twenty-eight thousand, seventy-three".