126907709 has 2 divisors, whose sum is σ = 126907710. Its totient is φ = 126907708.

The previous prime is 126907667. The next prime is 126907777. The reversal of 126907709 is 907709621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114811225 + 12096484 = 10715^2 + 3478^2 .

It is a cyclic number.

It is not a de Polignac number, because 126907709 - 2⁸ = 126907453 is a prime.

It is a super-2 number, since 2×126907709² = 32211133207257362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126907789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63453854 + 63453855.

It is an arithmetic number, because the mean of its divisors is an integer number (63453855).

Almost surely, 2^126907709 is an apocalyptic number.

It is an amenable number.

126907709 is a deficient number, since it is larger than the sum of its proper divisors (1).

126907709 is an equidigital number, since it uses as much as digits as its factorization.

126907709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 126907709 is about 11265.3321744190. The cubic root of 126907709 is about 502.5307806859.

The spelling of 126907709 in words is "one hundred twenty-six million, nine hundred seven thousand, seven hundred nine".