9842021 has 8 divisors (see below), whose sum is σ = 11271744. Its totient is φ = 8418240.

The previous prime is 9842017. The next prime is 9842023. The reversal of 9842021 is 1202489.

9842021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9842021 - 2² = 9842017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9842023) 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, 2966 + ... + 5336.

It is an arithmetic number, because the mean of its divisors is an integer number (1408968).

Almost surely, 2^9842021 is an apocalyptic number.

It is an amenable number.

9842021 is a deficient number, since it is larger than the sum of its proper divisors (1429723).

9842021 is a wasteful number, since it uses less digits than its factorization.

9842021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 9842021 is about 3137.1995473670. The cubic root of 9842021 is about 214.3029235491.

The spelling of 9842021 in words is "nine million, eight hundred forty-two thousand, twenty-one".