12442771 has 8 divisors (see below), whose sum is σ = 13777344. Its totient is φ = 11142120.

The previous prime is 12442763. The next prime is 12442813. The reversal of 12442771 is 17724421.

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

It is not a de Polignac number, because 12442771 - 2³ = 12442763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12442741) 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, 7705 + ... + 9178.

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

Almost surely, 2^12442771 is an apocalyptic number.

12442771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12442771 is a deficient number, since it is larger than the sum of its proper divisors (1334573).

12442771 is a wasteful number, since it uses less digits than its factorization.

12442771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16961.

The product of its digits is 3136, while the sum is 28.

The square root of 12442771 is about 3527.4312183230. The cubic root of 12442771 is about 231.7247218051.

The spelling of 12442771 in words is "twelve million, four hundred forty-two thousand, seven hundred seventy-one".