12003511420 has 24 divisors (see below), whose sum is σ = 25743703104. Its totient is φ = 4699246656.

The previous prime is 12003511409. The next prime is 12003511427. The reversal of 12003511420 is 2411530021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003511427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6383907 + ... + 6385786.

It is an arithmetic number, because the mean of its divisors is an integer number (1072654296).

Almost surely, 2^12003511420 is an apocalyptic number.

12003511420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12003511420 is an abundant number, since it is smaller than the sum of its proper divisors (13740191684).

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

12003511420 is a wasteful number, since it uses less digits than its factorization.

12003511420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12769749 (or 12769747 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 12003511420 in words is "twelve billion, three million, five hundred eleven thousand, four hundred twenty".