8421127208 has 32 divisors (see below), whose sum is σ = 18004449960. Its totient is φ = 3658045440.

The previous prime is 8421127201. The next prime is 8421127219. The reversal of 8421127208 is 8027211248.

It can be written as a sum of positive squares in 4 ways, for example, as 6143737924 + 2277389284 = 78382^2 + 47722^2 .

It is not an unprimeable number, because it can be changed into a prime (8421127201) 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, 2379773 + ... + 2383308.

Almost surely, 2^8421127208 is an apocalyptic number.

It is an amenable number.

8421127208 is an abundant number, since it is smaller than the sum of its proper divisors (9583322752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8421127208 is a wasteful number, since it uses less digits than its factorization.

8421127208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763117 (or 4763113 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 8421127208 is about 91766.6998861788. The cubic root of 8421127208 is about 2034.4955421437.

The spelling of 8421127208 in words is "eight billion, four hundred twenty-one million, one hundred twenty-seven thousand, two hundred eight".