4122565 has 4 divisors (see below), whose sum is σ = 4947084. Its totient is φ = 3298048.

The previous prime is 4122557. The next prime is 4122571. The reversal of 4122565 is 5652214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5652214 = 2 ⋅2826107.

It can be written as a sum of positive squares in 2 ways, for example, as 3272481 + 850084 = 1809^2 + 922^2 .

It is a cyclic number.

It is not a de Polignac number, because 4122565 - 2³ = 4122557 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412252 + ... + 412261.

It is an arithmetic number, because the mean of its divisors is an integer number (1236771).

Almost surely, 2^4122565 is an apocalyptic number.

It is an amenable number.

4122565 is a deficient number, since it is larger than the sum of its proper divisors (824519).

4122565 is an equidigital number, since it uses as much as digits as its factorization.

4122565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824518.

The product of its digits is 2400, while the sum is 25.

The square root of 4122565 is about 2030.4100571067. The cubic root of 4122565 is about 160.3451533345.

Adding to 4122565 its reverse (5652214), we get a palindrome (9774779).

The spelling of 4122565 in words is "four million, one hundred twenty-two thousand, five hundred sixty-five".