42530430161 has 4 divisors (see below), whose sum is σ = 42539925924. Its totient is φ = 42520934400.

The previous prime is 42530430149. The next prime is 42530430169. The reversal of 42530430161 is 16103403524.

42530430161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34803141136 + 7727289025 = 186556^2 + 87905^2 .

It is a cyclic number.

It is not a de Polignac number, because 42530430161 - 2¹⁸ = 42530168017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42530430169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4741160 + ... + 4750121.

It is an arithmetic number, because the mean of its divisors is an integer number (10634981481).

Almost surely, 2^42530430161 is an apocalyptic number.

It is an amenable number.

42530430161 is a deficient number, since it is larger than the sum of its proper divisors (9495763).

42530430161 is an equidigital number, since it uses as much as digits as its factorization.

42530430161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9495762.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 42530430161 its reverse (16103403524), we get a palindrome (58633833685).

The spelling of 42530430161 in words is "forty-two billion, five hundred thirty million, four hundred thirty thousand, one hundred sixty-one".