330042161 has 2 divisors, whose sum is σ = 330042162. Its totient is φ = 330042160.

The previous prime is 330042149. The next prime is 330042187. The reversal of 330042161 is 161240033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199374400 + 130667761 = 14120^2 + 11431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330042161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (330042101) 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, 165021080 + 165021081.

It is an arithmetic number, because the mean of its divisors is an integer number (165021081).

Almost surely, 2^330042161 is an apocalyptic number.

It is an amenable number.

330042161 is a deficient number, since it is larger than the sum of its proper divisors (1).

330042161 is an equidigital number, since it uses as much as digits as its factorization.

330042161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 330042161 is about 18167.0625308551. The cubic root of 330042161 is about 691.0717510766.

Adding to 330042161 its reverse (161240033), we get a palindrome (491282194).

The spelling of 330042161 in words is "three hundred thirty million, forty-two thousand, one hundred sixty-one".