42000324161 has 2 divisors, whose sum is σ = 42000324162. Its totient is φ = 42000324160.

The previous prime is 42000324143. The next prime is 42000324181. The reversal of 42000324161 is 16142300024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33062512561 + 8937811600 = 181831^2 + 94540^2 .

It is a cyclic number.

It is not a de Polignac number, because 42000324161 - 2⁶ = 42000324097 is a prime.

It is not a weakly prime, because it can be changed into another prime (42000324101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21000162080 + 21000162081.

It is an arithmetic number, because the mean of its divisors is an integer number (21000162081).

Almost surely, 2^42000324161 is an apocalyptic number.

It is an amenable number.

42000324161 is a deficient number, since it is larger than the sum of its proper divisors (1).

42000324161 is an equidigital number, since it uses as much as digits as its factorization.

42000324161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 42000324161 its reverse (16142300024), we get a palindrome (58142624185).

The spelling of 42000324161 in words is "forty-two billion, three hundred twenty-four thousand, one hundred sixty-one".