42323161 has 2 divisors, whose sum is σ = 42323162. Its totient is φ = 42323160.

The previous prime is 42323159. The next prime is 42323179. The reversal of 42323161 is 16132324.

42323161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41409225 + 913936 = 6435^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 42323161 - 2¹ = 42323159 is a prime.

Together with 42323159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42323261) 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, 21161580 + 21161581.

It is an arithmetic number, because the mean of its divisors is an integer number (21161581).

Almost surely, 2^42323161 is an apocalyptic number.

It is an amenable number.

42323161 is a deficient number, since it is larger than the sum of its proper divisors (1).

42323161 is an equidigital number, since it uses as much as digits as its factorization.

42323161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 42323161 is about 6505.6253350466. The cubic root of 42323161 is about 348.4919084978.

Adding to 42323161 its reverse (16132324), we get a palindrome (58455485).

The spelling of 42323161 in words is "forty-two million, three hundred twenty-three thousand, one hundred sixty-one".