6144012139 has 4 divisors (see below), whose sum is σ = 6144522256. Its totient is φ = 6143502024.

The previous prime is 6144012089. The next prime is 6144012263. The reversal of 6144012139 is 9312104416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6144012139 - 2¹¹ = 6144010091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6144012139.

It is not an unprimeable number, because it can be changed into a prime (6144010139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236544 + ... + 261229.

It is an arithmetic number, because the mean of its divisors is an integer number (1536130564).

Almost surely, 2^6144012139 is an apocalyptic number.

6144012139 is a deficient number, since it is larger than the sum of its proper divisors (510117).

6144012139 is a wasteful number, since it uses less digits than its factorization.

6144012139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510116.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6144012139 is about 78383.7492022422. The cubic root of 6144012139 is about 1831.5439943073.

The spelling of 6144012139 in words is "six billion, one hundred forty-four million, twelve thousand, one hundred thirty-nine".