12302729 has 2 divisors, whose sum is σ = 12302730. Its totient is φ = 12302728.

The previous prime is 12302711. The next prime is 12302743. The reversal of 12302729 is 92720321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8410000 + 3892729 = 2900^2 + 1973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12302729 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12302698 and 12302707.

It is not a weakly prime, because it can be changed into another prime (12302779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6151364 + 6151365.

It is an arithmetic number, because the mean of its divisors is an integer number (6151365).

Almost surely, 2^12302729 is an apocalyptic number.

It is an amenable number.

12302729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12302729 is an equidigital number, since it uses as much as digits as its factorization.

12302729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12302729 is about 3507.5246257154. The cubic root of 12302729 is about 230.8520944956.

It can be divided in two parts, 12302 and 729, that added together give a palindrome (13031).

The spelling of 12302729 in words is "twelve million, three hundred two thousand, seven hundred twenty-nine".