12742571 has 8 divisors (see below), whose sum is σ = 13957920. Its totient is φ = 11579008.

The previous prime is 12742553. The next prime is 12742579. The reversal of 12742571 is 17524721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12742571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12742579) 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, 12431 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (1744740).

Almost surely, 2^12742571 is an apocalyptic number.

12742571 is a deficient number, since it is larger than the sum of its proper divisors (1215349).

12742571 is a wasteful number, since it uses less digits than its factorization.

12742571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25893.

The product of its digits is 3920, while the sum is 29.

The square root of 12742571 is about 3569.6737946205. The cubic root of 12742571 is about 233.5710540989.

The spelling of 12742571 in words is "twelve million, seven hundred forty-two thousand, five hundred seventy-one".