842072971 has 4 divisors (see below), whose sum is σ = 871110000. Its totient is φ = 813035944.

The previous prime is 842072939. The next prime is 842073007. The reversal of 842072971 is 179270248.

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 842072971 - 2⁵ = 842072939 is a prime.

It is a super-4 number, since 4×842072971⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842072911) 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, 14518471 + ... + 14518528.

It is an arithmetic number, because the mean of its divisors is an integer number (217777500).

Almost surely, 2^842072971 is an apocalyptic number.

842072971 is a deficient number, since it is larger than the sum of its proper divisors (29037029).

842072971 is a wasteful number, since it uses less digits than its factorization.

842072971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29037028.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 842072971 is about 29018.4936032179. The cubic root of 842072971 is about 944.3143205880.

It can be divided in two parts, 84207 and 2971, that added together give a palindrome (87178).

The spelling of 842072971 in words is "eight hundred forty-two million, seventy-two thousand, nine hundred seventy-one".