42868569 has 4 divisors (see below), whose sum is σ = 57158096. Its totient is φ = 28579044.

The previous prime is 42868561. The next prime is 42868597. The reversal of 42868569 is 96586824.

It is a happy number.

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 not a de Polignac number, because 42868569 - 2³ = 42868561 is a prime.

It is a super-2 number, since 2×42868569² = 3675428416215522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42868561) 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, 7144759 + ... + 7144764.

It is an arithmetic number, because the mean of its divisors is an integer number (14289524).

Almost surely, 2^42868569 is an apocalyptic number.

It is an amenable number.

42868569 is a deficient number, since it is larger than the sum of its proper divisors (14289527).

42868569 is a wasteful number, since it uses less digits than its factorization.

42868569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14289526.

The product of its digits is 829440, while the sum is 48.

The square root of 42868569 is about 6547.4093349966. The cubic root of 42868569 is about 349.9824998053.

The spelling of 42868569 in words is "forty-two million, eight hundred sixty-eight thousand, five hundred sixty-nine".