12742691 has 8 divisors (see below), whose sum is σ = 13777344. Its totient is φ = 11715840.

The previous prime is 12742679. The next prime is 12742693. The reversal of 12742691 is 19624721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12742691 - 2⁶ = 12742627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12742693) 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, 1715 + ... + 5331.

It is an arithmetic number, because the mean of its divisors is an integer number (1722168).

Almost surely, 2^12742691 is an apocalyptic number.

12742691 is a deficient number, since it is larger than the sum of its proper divisors (1034653).

12742691 is a wasteful number, since it uses less digits than its factorization.

12742691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901.

The product of its digits is 6048, while the sum is 32.

The square root of 12742691 is about 3569.6906028394. The cubic root of 12742691 is about 233.5717872958.

The spelling of 12742691 in words is "twelve million, seven hundred forty-two thousand, six hundred ninety-one".