126128207 has 2 divisors, whose sum is σ = 126128208. Its totient is φ = 126128206.

The previous prime is 126128203. The next prime is 126128209. The reversal of 126128207 is 702821621.

It is a strong prime.

It is an emirp because it is prime and its reverse (702821621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126128207 - 2² = 126128203 is a prime.

Together with 126128209, it forms a pair of twin primes.

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 126128207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126128201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63064103 + 63064104.

It is an arithmetic number, because the mean of its divisors is an integer number (63064104).

Almost surely, 2^126128207 is an apocalyptic number.

126128207 is a deficient number, since it is larger than the sum of its proper divisors (1).

126128207 is an equidigital number, since it uses as much as digits as its factorization.

126128207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 126128207 is about 11230.6815020283. The cubic root of 126128207 is about 501.4997728648.

Adding to 126128207 its reverse (702821621), we get a palindrome (828949828).

The spelling of 126128207 in words is "one hundred twenty-six million, one hundred twenty-eight thousand, two hundred seven".