42207565 has 16 divisors (see below), whose sum is σ = 52249392. Its totient is φ = 32707584.

The previous prime is 42207563. The next prime is 42207577. The reversal of 42207565 is 56570224.

It can be written as a sum of positive squares in 8 ways, for example, as 6135529 + 36072036 = 2477^2 + 6006^2 .

It is a cyclic number.

It is not a de Polignac number, because 42207565 - 2¹ = 42207563 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 (42207563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62007 + ... + 62683.

It is an arithmetic number, because the mean of its divisors is an integer number (3265587).

Almost surely, 2^42207565 is an apocalyptic number.

It is an amenable number.

42207565 is a deficient number, since it is larger than the sum of its proper divisors (10041827).

42207565 is a wasteful number, since it uses less digits than its factorization.

42207565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 42207565 is about 6496.7349491879. The cubic root of 42207565 is about 348.1743439838.

Adding to 42207565 its reverse (56570224), we get a palindrome (98777789).

The spelling of 42207565 in words is "forty-two million, two hundred seven thousand, five hundred sixty-five".