42496565 has 8 divisors (see below), whose sum is σ = 51832248. Its totient is φ = 33439680.

The previous prime is 42496561. The next prime is 42496589. The reversal of 42496565 is 56569424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1868689 + 40627876 = 1367^2 + 6374^2 .

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

It is not a de Polignac number, because 42496565 - 2² = 42496561 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 (42496561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69362 + ... + 69971.

It is an arithmetic number, because the mean of its divisors is an integer number (6479031).

Almost surely, 2^42496565 is an apocalyptic number.

It is an amenable number.

42496565 is a deficient number, since it is larger than the sum of its proper divisors (9335683).

42496565 is a wasteful number, since it uses less digits than its factorization.

42496565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139399.

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

The square root of 42496565 is about 6518.9389474055. The cubic root of 42496565 is about 348.9672002519.

The spelling of 42496565 in words is "forty-two million, four hundred ninety-six thousand, five hundred sixty-five".