12140735421 has 16 divisors (see below), whose sum is σ = 16749374400. Its totient is φ = 7813077888.

The previous prime is 12140735417. The next prime is 12140735423. The reversal of 12140735421 is 12453704121.

It is not a de Polignac number, because 12140735421 - 2² = 12140735417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140735423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504945 + ... + 528441.

It is an arithmetic number, because the mean of its divisors is an integer number (1046835900).

Almost surely, 2^12140735421 is an apocalyptic number.

It is an amenable number.

12140735421 is a deficient number, since it is larger than the sum of its proper divisors (4608638979).

12140735421 is a wasteful number, since it uses less digits than its factorization.

12140735421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29468.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 12140735421 in words is "twelve billion, one hundred forty million, seven hundred thirty-five thousand, four hundred twenty-one".