12043123420 has 12 divisors (see below), whose sum is σ = 25290559224. Its totient is φ = 4817249360.

The previous prime is 12043123409. The next prime is 12043123423. The reversal of 12043123420 is 2432134021.

It is a junction number, because it is equal to n+sod(n) for n = 12043123391 and 12043123400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043123423) 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, 301078066 + ... + 301078105.

It is an arithmetic number, because the mean of its divisors is an integer number (2107546602).

Almost surely, 2^12043123420 is an apocalyptic number.

12043123420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12043123420 is an abundant number, since it is smaller than the sum of its proper divisors (13247435804).

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

12043123420 is a wasteful number, since it uses less digits than its factorization.

12043123420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602156180 (or 602156178 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12043123420 its reverse (2432134021), we get a palindrome (14475257441).

The spelling of 12043123420 in words is "twelve billion, forty-three million, one hundred twenty-three thousand, four hundred twenty".