9204120840 has 32 divisors (see below), whose sum is σ = 27612362880. Its totient is φ = 2454432192.

The previous prime is 9204120839. The next prime is 9204120859. The reversal of 9204120840 is 480214029.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 9204120798 and 9204120807.

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, 38350384 + ... + 38350623.

It is an arithmetic number, because the mean of its divisors is an integer number (862886340).

Almost surely, 2^9204120840 is an apocalyptic number.

It is an amenable number.

9204120840 is an abundant number, since it is smaller than the sum of its proper divisors (18408242040).

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

9204120840 is a wasteful number, since it uses less digits than its factorization.

9204120840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76701021 (or 76701017 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 9204120840 is about 95938.1094247745. The cubic root of 9204120840 is about 2095.6919118920.

Adding to 9204120840 its reverse (480214029), we get a palindrome (9684334869).

The spelling of 9204120840 in words is "nine billion, two hundred four million, one hundred twenty thousand, eight hundred forty".