9972842 has 8 divisors (see below), whose sum is σ = 16319232. Its totient is φ = 4533100.

The previous prime is 9972811. The next prime is 9972913. The reversal of 9972842 is 2482799.

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

It is a self number, because there is not a number n which added to its sum of digits gives 9972842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226634 + ... + 226677.

It is an arithmetic number, because the mean of its divisors is an integer number (2039904).

Almost surely, 2^9972842 is an apocalyptic number.

9972842 is a deficient number, since it is larger than the sum of its proper divisors (6346390).

9972842 is a wasteful number, since it uses less digits than its factorization.

9972842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453324.

The product of its digits is 72576, while the sum is 41.

The square root of 9972842 is about 3157.9806839181. The cubic root of 9972842 is about 215.2482583877.

It can be divided in two parts, 9 and 972842, that multiplied together give a palindrome (8755578).

The spelling of 9972842 in words is "nine million, nine hundred seventy-two thousand, eight hundred forty-two".