12742637 has 2 divisors, whose sum is σ = 12742638. Its totient is φ = 12742636.

The previous prime is 12742633. The next prime is 12742651. The reversal of 12742637 is 73624721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9821956 + 2920681 = 3134^2 + 1709^2 .

It is a cyclic number.

It is not a de Polignac number, because 12742637 - 2² = 12742633 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12742633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6371318 + 6371319.

It is an arithmetic number, because the mean of its divisors is an integer number (6371319).

Almost surely, 2^12742637 is an apocalyptic number.

It is an amenable number.

12742637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12742637 is an equidigital number, since it uses as much as digits as its factorization.

12742637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 32.

The square root of 12742637 is about 3569.6830391507. The cubic root of 12742637 is about 233.5714573578.

The spelling of 12742637 in words is "twelve million, seven hundred forty-two thousand, six hundred thirty-seven".