12420792320 has 240 divisors, whose sum is σ = 31657640448. Its totient is φ = 4671406080.

The previous prime is 12420792299. The next prime is 12420792323. The reversal of 12420792320 is 2329702421.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (12420792323) 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, 170147804 + ... + 170147876.

Almost surely, 2^12420792320 is an apocalyptic number.

12420792320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12420792320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15828820224).

12420792320 is an abundant number, since it is smaller than the sum of its proper divisors (19236848128).

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

12420792320 is an frugal number, since it uses more digits than its factorization.

12420792320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 12420792320 in words is "twelve billion, four hundred twenty million, seven hundred ninety-two thousand, three hundred twenty".