12140252440 has 32 divisors (see below), whose sum is σ = 27328110480. Its totient is φ = 4853871232.

The previous prime is 12140252431. The next prime is 12140252477. The reversal of 12140252440 is 4425204121.

12140252440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19947 + ... + 157093.

Almost surely, 2^12140252440 is an apocalyptic number.

12140252440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12140252440 is an abundant number, since it is smaller than the sum of its proper divisors (15187858040).

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

12140252440 is a wasteful number, since it uses less digits than its factorization.

12140252440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139371 (or 139367 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 12140252440 its reverse (4425204121), we get a palindrome (16565456561).

The spelling of 12140252440 in words is "twelve billion, one hundred forty million, two hundred fifty-two thousand, four hundred forty".