126705679 has 2 divisors, whose sum is σ = 126705680. Its totient is φ = 126705678.

The previous prime is 126705671. The next prime is 126705763. The reversal of 126705679 is 976507621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126705679 - 2³ = 126705671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126705671) 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, 63352839 + 63352840.

It is an arithmetic number, because the mean of its divisors is an integer number (63352840).

Almost surely, 2^126705679 is an apocalyptic number.

126705679 is a deficient number, since it is larger than the sum of its proper divisors (1).

126705679 is an equidigital number, since it uses as much as digits as its factorization.

126705679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 126705679 is about 11256.3617123829. The cubic root of 126705679 is about 502.2639720555.

The spelling of 126705679 in words is "one hundred twenty-six million, seven hundred five thousand, six hundred seventy-nine".