126056789 has 2 divisors, whose sum is σ = 126056790. Its totient is φ = 126056788.

The previous prime is 126056761. The next prime is 126056797. The reversal of 126056789 is 987650621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87740689 + 38316100 = 9367^2 + 6190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126056789 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 (126056719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63028394 + 63028395.

It is an arithmetic number, because the mean of its divisors is an integer number (63028395).

Almost surely, 2^126056789 is an apocalyptic number.

It is an amenable number.

126056789 is a deficient number, since it is larger than the sum of its proper divisors (1).

126056789 is an equidigital number, since it uses as much as digits as its factorization.

126056789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 126056789 is about 11227.5014584724. The cubic root of 126056789 is about 501.4050996909.

The spelling of 126056789 in words is "one hundred twenty-six million, fifty-six thousand, seven hundred eighty-nine".