12702321 has 6 divisors (see below), whose sum is σ = 18347810. Its totient is φ = 8468208.

The previous prime is 12702311. The next prime is 12702323. The reversal of 12702321 is 12320721.

It can be written as a sum of positive squares in only one way, i.e., 12702096 + 225 = 3564^2 + 15^2 .

It is not a de Polignac number, because 12702321 - 2⁵ = 12702289 is a prime.

It is a super-2 number, since 2×12702321² = 322697917574082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12702294 and 12702303.

It is not an unprimeable number, because it can be changed into a prime (12702323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 705676 + ... + 705693.

Almost surely, 2^12702321 is an apocalyptic number.

It is an amenable number.

12702321 is a deficient number, since it is larger than the sum of its proper divisors (5645489).

12702321 is a wasteful number, since it uses less digits than its factorization.

12702321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411375 (or 1411372 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12702321 is about 3564.0315655168. The cubic root of 12702321 is about 233.3248674933.

The spelling of 12702321 in words is "twelve million, seven hundred two thousand, three hundred twenty-one".