126716939 has 2 divisors, whose sum is σ = 126716940. Its totient is φ = 126716938.

The previous prime is 126716927. The next prime is 126716999. The reversal of 126716939 is 939617621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126716939 - 2¹⁶ = 126651403 is a prime.

It is a super-3 number, since 3×126716939³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126716939.

It is not a weakly prime, because it can be changed into another prime (126716999) 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, 63358469 + 63358470.

It is an arithmetic number, because the mean of its divisors is an integer number (63358470).

Almost surely, 2^126716939 is an apocalyptic number.

126716939 is a deficient number, since it is larger than the sum of its proper divisors (1).

126716939 is an equidigital number, since it uses as much as digits as its factorization.

126716939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 126716939 is about 11256.8618628817. The cubic root of 126716939 is about 502.2788499070.

The spelling of 126716939 in words is "one hundred twenty-six million, seven hundred sixteen thousand, nine hundred thirty-nine".