42539169 has 8 divisors (see below), whose sum is σ = 58038112. Its totient is φ = 27699840.

The previous prime is 42539149. The next prime is 42539191. The reversal of 42539169 is 96193524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42539169 - 2⁵ = 42539137 is a prime.

It is a super-2 number, since 2×42539169² = 3619161798421122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42539149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164752 + ... + 165009.

It is an arithmetic number, because the mean of its divisors is an integer number (7254764).

Almost surely, 2^42539169 is an apocalyptic number.

It is an amenable number.

42539169 is a deficient number, since it is larger than the sum of its proper divisors (15498943).

42539169 is a wasteful number, since it uses less digits than its factorization.

42539169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329807.

The product of its digits is 58320, while the sum is 39.

The square root of 42539169 is about 6522.2058385181. The cubic root of 42539169 is about 349.0837777764.

The spelling of 42539169 in words is "forty-two million, five hundred thirty-nine thousand, one hundred sixty-nine".