42565539 has 8 divisors (see below), whose sum is σ = 56851200. Its totient is φ = 28328456.

The previous prime is 42565507. The next prime is 42565543. The reversal of 42565539 is 93556524.

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

It is a cyclic number.

It is not a de Polignac number, because 42565539 - 2⁵ = 42565507 is a prime.

It is a super-2 number, since 2×42565539² = 3623650220721042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42565497 and 42565506.

It is not an unprimeable number, because it can be changed into a prime (42565639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10047 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (7106400).

Almost surely, 2^42565539 is an apocalyptic number.

42565539 is a deficient number, since it is larger than the sum of its proper divisors (14285661).

42565539 is a wasteful number, since it uses less digits than its factorization.

42565539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24289.

The product of its digits is 162000, while the sum is 39.

The square root of 42565539 is about 6524.2270806587. The cubic root of 42565539 is about 349.1558951368.

The spelling of 42565539 in words is "forty-two million, five hundred sixty-five thousand, five hundred thirty-nine".