126725579 has 2 divisors, whose sum is σ = 126725580. Its totient is φ = 126725578.

The previous prime is 126725549. The next prime is 126725593. The reversal of 126725579 is 975527621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126725579 - 2¹⁶ = 126660043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126725519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63362789 + 63362790.

It is an arithmetic number, because the mean of its divisors is an integer number (63362790).

Almost surely, 2^126725579 is an apocalyptic number.

126725579 is a deficient number, since it is larger than the sum of its proper divisors (1).

126725579 is an equidigital number, since it uses as much as digits as its factorization.

126725579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 44.

The square root of 126725579 is about 11257.2456222648. The cubic root of 126725579 is about 502.2902653517.

The spelling of 126725579 in words is "one hundred twenty-six million, seven hundred twenty-five thousand, five hundred seventy-nine".