42653565 has 12 divisors (see below), whose sum is σ = 73932924. Its totient is φ = 22748544.

The previous prime is 42653557. The next prime is 42653593. The reversal of 42653565 is 56535624.

It is a happy number.

42653565 is a `hidden beast` number, since 42 + 6 + 53 + 565 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28068804 + 14584761 = 5298^2 + 3819^2 .

It is not a de Polignac number, because 42653565 - 2³ = 42653557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 473884 + ... + 473973.

It is an arithmetic number, because the mean of its divisors is an integer number (6161077).

Almost surely, 2^42653565 is an apocalyptic number.

42653565 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42653565 is a deficient number, since it is larger than the sum of its proper divisors (31279359).

42653565 is a wasteful number, since it uses less digits than its factorization.

42653565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947868 (or 947865 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 42653565 is about 6530.9696829797. The cubic root of 42653565 is about 349.3964154828.

The spelling of 42653565 in words is "forty-two million, six hundred fifty-three thousand, five hundred sixty-five".