42565415807 has 4 divisors (see below), whose sum is σ = 42871641960. Its totient is φ = 42259189656.

The previous prime is 42565415747. The next prime is 42565415843. The reversal of 42565415807 is 70851456524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42565415807 - 2²⁴ = 42548638591 is a prime.

It is a super-2 number, since 2×42565415807² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42565415707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153112868 + ... + 153113145.

It is an arithmetic number, because the mean of its divisors is an integer number (10717910490).

Almost surely, 2^42565415807 is an apocalyptic number.

42565415807 is a deficient number, since it is larger than the sum of its proper divisors (306226153).

42565415807 is a wasteful number, since it uses less digits than its factorization.

42565415807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306226152.

The product of its (nonzero) digits is 1344000, while the sum is 47.

The spelling of 42565415807 in words is "forty-two billion, five hundred sixty-five million, four hundred fifteen thousand, eight hundred seven".