12126757 has 2 divisors, whose sum is σ = 12126758. Its totient is φ = 12126756.

The previous prime is 12126749. The next prime is 12126761. The reversal of 12126757 is 75762121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12068676 + 58081 = 3474^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 12126757 - 2³ = 12126749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12126707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6063378 + 6063379.

It is an arithmetic number, because the mean of its divisors is an integer number (6063379).

Almost surely, 2^12126757 is an apocalyptic number.

It is an amenable number.

12126757 is a deficient number, since it is larger than the sum of its proper divisors (1).

12126757 is an equidigital number, since it uses as much as digits as its factorization.

12126757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 31.

The square root of 12126757 is about 3482.3493506540. The cubic root of 12126757 is about 229.7461408297.

Adding to 12126757 its reverse (75762121), we get a palindrome (87888878).

The spelling of 12126757 in words is "twelve million, one hundred twenty-six thousand, seven hundred fifty-seven".