12105067420 has 12 divisors (see below), whose sum is σ = 25420641624. Its totient is φ = 4842026960.

The previous prime is 12105067399. The next prime is 12105067423. The reversal of 12105067420 is 2476050121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105067423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302626666 + ... + 302626705.

It is an arithmetic number, because the mean of its divisors is an integer number (2118386802).

Almost surely, 2^12105067420 is an apocalyptic number.

12105067420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12105067420 is an abundant number, since it is smaller than the sum of its proper divisors (13315574204).

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

12105067420 is a wasteful number, since it uses less digits than its factorization.

12105067420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605253380 (or 605253378 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 12105067420 in words is "twelve billion, one hundred five million, sixty-seven thousand, four hundred twenty".