842534042567 has 4 divisors (see below), whose sum is σ = 962896048656. Its totient is φ = 722172036480.

The previous prime is 842534042557. The next prime is 842534042573. The reversal of 842534042567 is 765240435248.

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 842534042567 - 2¹⁴ = 842534026183 is a prime.

It is a super-4 number, since 4×842534042567⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842534042557) 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, 60181003034 + ... + 60181003047.

It is an arithmetic number, because the mean of its divisors is an integer number (240724012164).

Almost surely, 2^842534042567 is an apocalyptic number.

842534042567 is a deficient number, since it is larger than the sum of its proper divisors (120362006089).

842534042567 is a wasteful number, since it uses less digits than its factorization.

842534042567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120362006088.

The product of its (nonzero) digits is 6451200, while the sum is 50.

The spelling of 842534042567 in words is "eight hundred forty-two billion, five hundred thirty-four million, forty-two thousand, five hundred sixty-seven".