8421070 has 32 divisors (see below), whose sum is σ = 17625600. Its totient is φ = 2836896.

The previous prime is 8421067. The next prime is 8421071. The reversal of 8421070 is 701248.

8421070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421071) 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, 3111 + ... + 5149.

It is an arithmetic number, because the mean of its divisors is an integer number (550800).

Almost surely, 2^8421070 is an apocalyptic number.

8421070 is an abundant number, since it is smaller than the sum of its proper divisors (9204530).

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

8421070 is a wasteful number, since it uses less digits than its factorization.

8421070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 8421070 is about 2901.9079930280. The cubic root of 8421070 is about 203.4490935093.

The spelling of 8421070 in words is "eight million, four hundred twenty-one thousand, seventy".