42465569 has 4 divisors (see below), whose sum is σ = 42482244. Its totient is φ = 42448896.

The previous prime is 42465559. The next prime is 42465583. The reversal of 42465569 is 96556424.

It is a happy number.

42465569 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.

It can be written as a sum of positive squares in 2 ways, for example, as 42081169 + 384400 = 6487^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 42465569 - 2²⁰ = 41416993 is a prime.

It is a super-2 number, since 2×42465569² = 3606649100987522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42465509) 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, 3632 + ... + 9905.

It is an arithmetic number, because the mean of its divisors is an integer number (10620561).

Almost surely, 2^42465569 is an apocalyptic number.

It is an amenable number.

42465569 is a deficient number, since it is larger than the sum of its proper divisors (16675).

42465569 is a wasteful number, since it uses less digits than its factorization.

42465569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16674.

The product of its digits is 259200, while the sum is 41.

The square root of 42465569 is about 6516.5611329903. The cubic root of 42465569 is about 348.8823367797.

It can be divided in two parts, 42465 and 569, that added together give a palindrome (43034).

The spelling of 42465569 in words is "forty-two million, four hundred sixty-five thousand, five hundred sixty-nine".