126512077 has 2 divisors, whose sum is σ = 126512078. Its totient is φ = 126512076.

The previous prime is 126512069. The next prime is 126512081. The reversal of 126512077 is 770215621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89472681 + 37039396 = 9459^2 + 6086^2 .

It is a cyclic number.

It is not a de Polignac number, because 126512077 - 2³ = 126512069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126512027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63256038 + 63256039.

It is an arithmetic number, because the mean of its divisors is an integer number (63256039).

Almost surely, 2^126512077 is an apocalyptic number.

It is an amenable number.

126512077 is a deficient number, since it is larger than the sum of its proper divisors (1).

126512077 is an equidigital number, since it uses as much as digits as its factorization.

126512077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 126512077 is about 11247.7587545253. The cubic root of 126512077 is about 502.0080275220.

Adding to 126512077 its reverse (770215621), we get a palindrome (896727698).

The spelling of 126512077 in words is "one hundred twenty-six million, five hundred twelve thousand, seventy-seven".