8004212421 has 8 divisors (see below), whose sum is σ = 10675082880. Its totient is φ = 5334741792.

The previous prime is 8004212399. The next prime is 8004212429. The reversal of 8004212421 is 1242124008.

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

It is not a de Polignac number, because 8004212421 - 2⁵ = 8004212389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8004212391 and 8004212400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8004212429) 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, 336541 + ... + 359538.

It is an arithmetic number, because the mean of its divisors is an integer number (1334385360).

Almost surely, 2^8004212421 is an apocalyptic number.

It is an amenable number.

8004212421 is a deficient number, since it is larger than the sum of its proper divisors (2670870459).

8004212421 is a wasteful number, since it uses less digits than its factorization.

8004212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699915.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 8004212421 is about 89466.2641502371. The cubic root of 8004212421 is about 2000.3509734885.

Adding to 8004212421 its reverse (1242124008), we get a palindrome (9246336429).

The spelling of 8004212421 in words is "eight billion, four million, two hundred twelve thousand, four hundred twenty-one".