42565365 has 48 divisors (see below), whose sum is σ = 80458560. Its totient is φ = 21346560.

The previous prime is 42565363. The next prime is 42565381. The reversal of 42565365 is 56356524.

It is a happy number.

It is not a de Polignac number, because 42565365 - 2¹ = 42565363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42565361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38470 + ... + 39560.

It is an arithmetic number, because the mean of its divisors is an integer number (1676220).

Almost surely, 2^42565365 is an apocalyptic number.

42565365 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42565365 is a deficient number, since it is larger than the sum of its proper divisors (37893195).

42565365 is a wasteful number, since it uses less digits than its factorization.

42565365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139 (or 1116 counting only the distinct ones).

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

The square root of 42565365 is about 6524.2137457321. The cubic root of 42565365 is about 349.1554193747.

The spelling of 42565365 in words is "forty-two million, five hundred sixty-five thousand, three hundred sixty-five".