4239161 has 2 divisors, whose sum is σ = 4239162. Its totient is φ = 4239160.

The previous prime is 4239149. The next prime is 4239163. The reversal of 4239161 is 1619324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3083536 + 1155625 = 1756^2 + 1075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4239161 is a prime.

Together with 4239163, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4239161.

It is not a weakly prime, because it can be changed into another prime (4239163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2119580 + 2119581.

It is an arithmetic number, because the mean of its divisors is an integer number (2119581).

Almost surely, 2^4239161 is an apocalyptic number.

It is an amenable number.

4239161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4239161 is an equidigital number, since it uses as much as digits as its factorization.

4239161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 4239161 is about 2058.9222909085. The cubic root of 4239161 is about 161.8427702763.

The spelling of 4239161 in words is "four million, two hundred thirty-nine thousand, one hundred sixty-one".