8421246 has 40 divisors (see below), whose sum is σ = 19035720. Its totient is φ = 2782512.

The previous prime is 8421241. The next prime is 8421251. The reversal of 8421246 is 6421248.

It is an interprime number because it is at equal distance from previous prime (8421241) and next prime (8421251).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36660 + ... + 36888.

It is an arithmetic number, because the mean of its divisors is an integer number (475893).

Almost surely, 2^8421246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8421246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9517860).

8421246 is an abundant number, since it is smaller than the sum of its proper divisors (10614474).

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

8421246 is a wasteful number, since it uses less digits than its factorization.

8421246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 461 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 8421246 is about 2901.9383177456. The cubic root of 8421246 is about 203.4505108585.

The spelling of 8421246 in words is "eight million, four hundred twenty-one thousand, two hundred forty-six".