12742689 has 8 divisors (see below), whose sum is σ = 17449600. Its totient is φ = 8265456.

The previous prime is 12742679. The next prime is 12742693. The reversal of 12742689 is 98624721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12742689 - 2¹¹ = 12740641 is a prime.

It is a super-2 number, since 2×12742689² = 324752245901442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12742679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57289 + ... + 57510.

It is an arithmetic number, because the mean of its divisors is an integer number (2181200).

Almost surely, 2^12742689 is an apocalyptic number.

It is an amenable number.

12742689 is a deficient number, since it is larger than the sum of its proper divisors (4706911).

12742689 is a wasteful number, since it uses less digits than its factorization.

12742689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114839.

The product of its digits is 48384, while the sum is 39.

The square root of 12742689 is about 3569.6903227031. The cubic root of 12742689 is about 233.5717750759.

It can be divided in two parts, 12742 and 689, that added together give a palindrome (13431).

The spelling of 12742689 in words is "twelve million, seven hundred forty-two thousand, six hundred eighty-nine".