126711929 has 2 divisors, whose sum is σ = 126711930. Its totient is φ = 126711928.

The previous prime is 126711887. The next prime is 126711943. The reversal of 126711929 is 929117621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 9314704 = 10835^2 + 3052^2 .

It is an emirp because it is prime and its reverse (929117621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126711929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126711892 and 126711901.

It is not a weakly prime, because it can be changed into another prime (126711989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63355964 + 63355965.

It is an arithmetic number, because the mean of its divisors is an integer number (63355965).

Almost surely, 2^126711929 is an apocalyptic number.

It is an amenable number.

126711929 is a deficient number, since it is larger than the sum of its proper divisors (1).

126711929 is an equidigital number, since it uses as much as digits as its factorization.

126711929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 126711929 is about 11256.6393297467. The cubic root of 126711929 is about 502.2722302968.

The spelling of 126711929 in words is "one hundred twenty-six million, seven hundred eleven thousand, nine hundred twenty-nine".