8242353921 has 16 divisors (see below), whose sum is σ = 11072712960. Its totient is φ = 5453583360.

The previous prime is 8242353913. The next prime is 8242353923. The reversal of 8242353921 is 1293532428.

It is not a de Polignac number, because 8242353921 - 2³ = 8242353913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8242353921.

It is not an unprimeable number, because it can be changed into a prime (8242353923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233035 + ... + 266063.

It is an arithmetic number, because the mean of its divisors is an integer number (692044560).

Almost surely, 2^8242353921 is an apocalyptic number.

It is an amenable number.

8242353921 is a deficient number, since it is larger than the sum of its proper divisors (2830359039).

8242353921 is a wasteful number, since it uses less digits than its factorization.

8242353921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33656.

The product of its digits is 103680, while the sum is 39.

The square root of 8242353921 is about 90787.4105864905. The cubic root of 8242353921 is about 2019.9955822045.

The spelling of 8242353921 in words is "eight billion, two hundred forty-two million, three hundred fifty-three thousand, nine hundred twenty-one".