42302161 has 4 divisors (see below), whose sum is σ = 46147824. Its totient is φ = 38456500.

The previous prime is 42302159. The next prime is 42302173. The reversal of 42302161 is 16120324.

42302161 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42302161 - 2¹ = 42302159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42302101) 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 in 3 ways as a sum of consecutive naturals, for example, 1922815 + ... + 1922836.

It is an arithmetic number, because the mean of its divisors is an integer number (11536956).

Almost surely, 2^42302161 is an apocalyptic number.

It is an amenable number.

42302161 is a deficient number, since it is larger than the sum of its proper divisors (3845663).

42302161 is a wasteful number, since it uses less digits than its factorization.

42302161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845662.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 42302161 is about 6504.0111469769. The cubic root of 42302161 is about 348.4342604658.

Adding to 42302161 its reverse (16120324), we get a palindrome (58422485).

It can be divided in two parts, 42 and 302161, that added together give a palindrome (302203).

The spelling of 42302161 in words is "forty-two million, three hundred two thousand, one hundred sixty-one".