42832161 has 6 divisors (see below), whose sum is σ = 61868690. Its totient is φ = 28554768.

The previous prime is 42832151. The next prime is 42832177. The reversal of 42832161 is 16123824.

It can be written as a sum of positive squares in only one way, i.e., 37454400 + 5377761 = 6120^2 + 2319^2 .

It is not a de Polignac number, because 42832161 - 2⁷ = 42832033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42832121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2379556 + ... + 2379573.

Almost surely, 2^42832161 is an apocalyptic number.

It is an amenable number.

42832161 is a deficient number, since it is larger than the sum of its proper divisors (19036529).

42832161 is a wasteful number, since it uses less digits than its factorization.

42832161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759135 (or 4759132 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 42832161 is about 6544.6284080916. The cubic root of 42832161 is about 349.8833924473.

Adding to 42832161 its reverse (16123824), we get a palindrome (58955985).

The spelling of 42832161 in words is "forty-two million, eight hundred thirty-two thousand, one hundred sixty-one".