8253743421 has 32 divisors (see below), whose sum is σ = 13733157888. Its totient is φ = 4283706240.

The previous prime is 8253743419. The next prime is 8253743471. The reversal of 8253743421 is 1243473528.

It is not a de Polignac number, because 8253743421 - 2¹ = 8253743419 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8253743421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8253743471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243505 + ... + 275321.

It is an arithmetic number, because the mean of its divisors is an integer number (429161184).

Almost surely, 2^8253743421 is an apocalyptic number.

It is an amenable number.

8253743421 is a deficient number, since it is larger than the sum of its proper divisors (5479414467).

8253743421 is a wasteful number, since it uses less digits than its factorization.

8253743421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32961.

The product of its digits is 161280, while the sum is 39.

The square root of 8253743421 is about 90850.1151402683. The cubic root of 8253743421 is about 2020.9255815278.

The spelling of 8253743421 in words is "eight billion, two hundred fifty-three million, seven hundred forty-three thousand, four hundred twenty-one".