12771249 has 8 divisors (see below), whose sum is σ = 17924640. Its totient is φ = 8066016.

The previous prime is 12771221. The next prime is 12771271. The reversal of 12771249 is 94217721.

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

It is a de Polignac number, because none of the positive numbers 2^k-12771249 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12771149) 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, 111972 + ... + 112085.

It is an arithmetic number, because the mean of its divisors is an integer number (2240580).

Almost surely, 2^12771249 is an apocalyptic number.

12771249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12771249 is a deficient number, since it is larger than the sum of its proper divisors (5153391).

12771249 is a wasteful number, since it uses less digits than its factorization.

12771249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224079.

The product of its digits is 7056, while the sum is 33.

The square root of 12771249 is about 3573.6884307393. The cubic root of 12771249 is about 233.7461451889.

The spelling of 12771249 in words is "twelve million, seven hundred seventy-one thousand, two hundred forty-nine".