8420112 has 100 divisors (see below), whose sum is σ = 24981660. Its totient is φ = 2737152.

The previous prime is 8420051. The next prime is 8420119. The reversal of 8420112 is 2110248.

It can be written as a sum of positive squares in 2 ways, for example, as 3111696 + 5308416 = 1764^2 + 2304^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (8420119) 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, 94564 + ... + 94652.

Almost surely, 2^8420112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8420112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12490830).

8420112 is an abundant number, since it is smaller than the sum of its proper divisors (16561548).

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

8420112 is a wasteful number, since it uses less digits than its factorization.

8420112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 8420112 is about 2901.7429245197. The cubic root of 8420112 is about 203.4413782734.

The spelling of 8420112 in words is "eight million, four hundred twenty thousand, one hundred twelve".