8421426708 has 48 divisors (see below), whose sum is σ = 19895984640. Its totient is φ = 2772081664.

The previous prime is 8421426707. The next prime is 8421426709. The reversal of 8421426708 is 8076241248.

It is an interprime number because it is at equal distance from previous prime (8421426707) and next prime (8421426709).

It is a self number, because there is not a number n which added to its sum of digits gives 8421426708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421426707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917116 + ... + 926252.

It is an arithmetic number, because the mean of its divisors is an integer number (414499680).

Almost surely, 2^8421426708 is an apocalyptic number.

It is an amenable number.

8421426708 is an abundant number, since it is smaller than the sum of its proper divisors (11474557932).

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

8421426708 is a wasteful number, since it uses less digits than its factorization.

8421426708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10096 (or 10094 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 8421426708 is about 91768.3317272358. The cubic root of 8421426708 is about 2034.5196610127.

The spelling of 8421426708 in words is "eight billion, four hundred twenty-one million, four hundred twenty-six thousand, seven hundred eight".