8421040481 has 12 divisors (see below), whose sum is σ = 9836904960. Its totient is φ = 7187823720.

The previous prime is 8421040429. The next prime is 8421040517. The reversal of 8421040481 is 1840401248.

It is not a de Polignac number, because 8421040481 - 2⁶ = 8421040417 is a prime.

It is a super-2 number, since 2×8421040481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8421040681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347825 + ... + 371246.

It is an arithmetic number, because the mean of its divisors is an integer number (819742080).

Almost surely, 2^8421040481 is an apocalyptic number.

It is an amenable number.

8421040481 is a deficient number, since it is larger than the sum of its proper divisors (1415864479).

8421040481 is a wasteful number, since it uses less digits than its factorization.

8421040481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719324 (or 719317 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 8421040481 is about 91766.2273442687. The cubic root of 8421040481 is about 2034.4885578728.

The spelling of 8421040481 in words is "eight billion, four hundred twenty-one million, forty thousand, four hundred eighty-one".