42161567 has 4 divisors (see below), whose sum is σ = 48184656. Its totient is φ = 36138480.

The previous prime is 42161557. The next prime is 42161569. The reversal of 42161567 is 76516124.

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

It is not a de Polignac number, because 42161567 - 2²⁰ = 41112991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42161569) 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, 3011534 + ... + 3011547.

It is an arithmetic number, because the mean of its divisors is an integer number (12046164).

Almost surely, 2^42161567 is an apocalyptic number.

42161567 is a deficient number, since it is larger than the sum of its proper divisors (6023089).

42161567 is an equidigital number, since it uses as much as digits as its factorization.

42161567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023088.

The product of its digits is 10080, while the sum is 32.

The square root of 42161567 is about 6493.1938982291. The cubic root of 42161567 is about 348.0478173382.

The spelling of 42161567 in words is "forty-two million, one hundred sixty-one thousand, five hundred sixty-seven".