12942737 has 2 divisors, whose sum is σ = 12942738. Its totient is φ = 12942736.

The previous prime is 12942701. The next prime is 12942739. The reversal of 12942737 is 73724921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11082241 + 1860496 = 3329^2 + 1364^2 .

It is a cyclic number.

It is not a de Polignac number, because 12942737 - 2⁶ = 12942673 is a prime.

Together with 12942739, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12942697 and 12942706.

It is not a weakly prime, because it can be changed into another prime (12942739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6471368 + 6471369.

It is an arithmetic number, because the mean of its divisors is an integer number (6471369).

Almost surely, 2^12942737 is an apocalyptic number.

It is an amenable number.

12942737 is a deficient number, since it is larger than the sum of its proper divisors (1).

12942737 is an equidigital number, since it uses as much as digits as its factorization.

12942737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 12942737 is about 3597.6015621522. The cubic root of 12942737 is about 234.7877183631.

The spelling of 12942737 in words is "twelve million, nine hundred forty-two thousand, seven hundred thirty-seven".