9942871 has 8 divisors (see below), whose sum is σ = 10564400. Its totient is φ = 9331200.

The previous prime is 9942797. The next prime is 9942883. The reversal of 9942871 is 1782499.

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

It is a 9-Lehmer number, since φ(9942871) divides (9942871-1)⁹.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9942871 is a prime.

It is a Duffinian number.

9942871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942271) 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, 330 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (1320550).

Almost surely, 2^9942871 is an apocalyptic number.

9942871 is a deficient number, since it is larger than the sum of its proper divisors (621529).

9942871 is a wasteful number, since it uses less digits than its factorization.

9942871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929.

The product of its digits is 36288, while the sum is 40.

The square root of 9942871 is about 3153.2318341663. The cubic root of 9942871 is about 215.0324162408.

It can be divided in two parts, 99428 and 71, that added together give a palindrome (99499).

The spelling of 9942871 in words is "nine million, nine hundred forty-two thousand, eight hundred seventy-one".