8142320 has 40 divisors (see below), whose sum is σ = 20047824. Its totient is φ = 3064832.

The previous prime is 8142319. The next prime is 8142349. The reversal of 8142320 is 232418.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 8142292 and 8142301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1634 + ... + 4353.

Almost surely, 2^8142320 is an apocalyptic number.

8142320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8142320 is an abundant number, since it is smaller than the sum of its proper divisors (11905504).

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

8142320 is a wasteful number, since it uses less digits than its factorization.

8142320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6017 (or 6011 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8142320 is about 2853.4750743611. The cubic root of 8142320 is about 201.1790357155.

Adding to 8142320 its reverse (232418), we get a palindrome (8374738).

The spelling of 8142320 in words is "eight million, one hundred forty-two thousand, three hundred twenty".