12042443500 has 96 divisors (see below), whose sum is σ = 27607402368. Its totient is φ = 4580153600.

The previous prime is 12042443473. The next prime is 12042443503. The reversal of 12042443500 is 534424021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (12042443503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1986474 + ... + 1992526.

It is an arithmetic number, because the mean of its divisors is an integer number (287577108).

Almost surely, 2^12042443500 is an apocalyptic number.

12042443500 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 12042443500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13803701184).

12042443500 is an abundant number, since it is smaller than the sum of its proper divisors (15564958868).

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

12042443500 is a wasteful number, since it uses less digits than its factorization.

12042443500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268 (or 6256 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 12042443500 its reverse (534424021), we get a palindrome (12576867521).

The spelling of 12042443500 in words is "twelve billion, forty-two million, four hundred forty-three thousand, five hundred".