12420401320 has 32 divisors (see below), whose sum is σ = 27962056800. Its totient is φ = 4965288768.

The previous prime is 12420401311. The next prime is 12420401321. The reversal of 12420401320 is 2310402421.

It is not an unprimeable number, because it can be changed into a prime (12420401321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18990 + ... + 158749.

It is an arithmetic number, because the mean of its divisors is an integer number (873814275).

Almost surely, 2^12420401320 is an apocalyptic number.

12420401320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12420401320 is an abundant number, since it is smaller than the sum of its proper divisors (15541655480).

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

12420401320 is a wasteful number, since it uses less digits than its factorization.

12420401320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179497 (or 179493 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12420401320 its reverse (2310402421), we get a palindrome (14730803741).

The spelling of 12420401320 in words is "twelve billion, four hundred twenty million, four hundred one thousand, three hundred twenty".