42308161 has 4 divisors (see below), whose sum is σ = 48352192. Its totient is φ = 36264132.

The previous prime is 42308159. The next prime is 42308179. The reversal of 42308161 is 16180324.

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 42308161 - 2¹ = 42308159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42308141) 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, 3022005 + ... + 3022018.

It is an arithmetic number, because the mean of its divisors is an integer number (12088048).

Almost surely, 2^42308161 is an apocalyptic number.

It is an amenable number.

42308161 is a deficient number, since it is larger than the sum of its proper divisors (6044031).

42308161 is an equidigital number, since it uses as much as digits as its factorization.

42308161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044030.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 42308161 is about 6504.4723844444. The cubic root of 42308161 is about 348.4507332785.

Adding to 42308161 its reverse (16180324), we get a palindrome (58488485).

The spelling of 42308161 in words is "forty-two million, three hundred eight thousand, one hundred sixty-one".