12730071 has 4 divisors (see below), whose sum is σ = 16973432. Its totient is φ = 8486712.

The previous prime is 12730061. The next prime is 12730073. The reversal of 12730071 is 17003721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12730071 - 2⁶ = 12730007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2121676 + ... + 2121681.

It is an arithmetic number, because the mean of its divisors is an integer number (4243358).

Almost surely, 2^12730071 is an apocalyptic number.

12730071 is a deficient number, since it is larger than the sum of its proper divisors (4243361).

12730071 is an equidigital number, since it uses as much as digits as its factorization.

12730071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243360.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 12730071 is about 3567.9225047638. The cubic root of 12730071 is about 233.4946542007.

Adding to 12730071 its reverse (17003721), we get a palindrome (29733792).

The spelling of 12730071 in words is "twelve million, seven hundred thirty thousand, seventy-one".