8021423 has 4 divisors (see below), whose sum is σ = 8123040. Its totient is φ = 7919808.

The previous prime is 8021413. The next prime is 8021471. The reversal of 8021423 is 3241208.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8021423 - 2⁶ = 8021359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8021395 and 8021404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50690 + ... + 50847.

It is an arithmetic number, because the mean of its divisors is an integer number (2030760).

Almost surely, 2^8021423 is an apocalyptic number.

8021423 is a deficient number, since it is larger than the sum of its proper divisors (101617).

8021423 is a wasteful number, since it uses less digits than its factorization.

8021423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101616.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8021423 is about 2832.2116799420. The cubic root of 8021423 is about 200.1783658808.

The spelling of 8021423 in words is "eight million, twenty-one thousand, four hundred twenty-three".