8026427421 has 6 divisors (see below), whose sum is σ = 11593728510. Its totient is φ = 5350951608.

The previous prime is 8026427401. The next prime is 8026427473. The reversal of 8026427421 is 1247246208.

8026427421 is a `hidden beast` number, since 8 + 0 + 2 + 642 + 7 + 4 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7813676025 + 212751396 = 88395^2 + 14586^2 .

It is not a de Polignac number, because 8026427421 - 2¹⁴ = 8026411037 is a prime.

It is a super-2 number, since 2×8026427421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8026427401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445912626 + ... + 445912643.

It is an arithmetic number, because the mean of its divisors is an integer number (1932288085).

Almost surely, 2^8026427421 is an apocalyptic number.

It is an amenable number.

8026427421 is a deficient number, since it is larger than the sum of its proper divisors (3567301089).

8026427421 is a wasteful number, since it uses less digits than its factorization.

8026427421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891825275 (or 891825272 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 8026427421 is about 89590.3310687041. The cubic root of 8026427421 is about 2002.1998644943.

The spelling of 8026427421 in words is "eight billion, twenty-six million, four hundred twenty-seven thousand, four hundred twenty-one".