12400303140 has 144 divisors (see below), whose sum is σ = 39076717680. Its totient is φ = 3179151360.

The previous prime is 12400303129. The next prime is 12400303159. The reversal of 12400303140 is 4130300421.

It can be written as a sum of positive squares in 8 ways, for example, as 589824 + 12399713316 = 768^2 + 111354^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1253092 + ... + 1262948.

It is an arithmetic number, because the mean of its divisors is an integer number (271366095).

Almost surely, 2^12400303140 is an apocalyptic number.

12400303140 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 12400303140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19538358840).

12400303140 is an abundant number, since it is smaller than the sum of its proper divisors (26676414540).

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

12400303140 is a wasteful number, since it uses less digits than its factorization.

12400303140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10142 (or 10137 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12400303140 its reverse (4130300421), we get a palindrome (16530603561).

The spelling of 12400303140 in words is "twelve billion, four hundred million, three hundred three thousand, one hundred forty".