126316669 has 2 divisors, whose sum is σ = 126316670. Its totient is φ = 126316668.

The previous prime is 126316633. The next prime is 126316717. The reversal of 126316669 is 966613621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126292644 + 24025 = 11238^2 + 155^2 .

It is an emirp because it is prime and its reverse (966613621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126316669 - 2¹¹ = 126314621 is a prime.

It is a super-2 number, since 2×126316669² = 31911801734511122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126316609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63158334 + 63158335.

It is an arithmetic number, because the mean of its divisors is an integer number (63158335).

Almost surely, 2^126316669 is an apocalyptic number.

It is an amenable number.

126316669 is a deficient number, since it is larger than the sum of its proper divisors (1).

126316669 is an equidigital number, since it uses as much as digits as its factorization.

126316669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 126316669 is about 11239.0688671260. The cubic root of 126316669 is about 501.7494305136.

The spelling of 126316669 in words is "one hundred twenty-six million, three hundred sixteen thousand, six hundred sixty-nine".