1230129077 has 2 divisors, whose sum is σ = 1230129078. Its totient is φ = 1230129076.

The previous prime is 1230129067. The next prime is 1230129083. The reversal of 1230129077 is 7709210321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1189284196 + 40844881 = 34486^2 + 6391^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230129077 - 2⁶ = 1230129013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230129067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615064538 + 615064539.

It is an arithmetic number, because the mean of its divisors is an integer number (615064539).

Almost surely, 2^1230129077 is an apocalyptic number.

It is an amenable number.

1230129077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230129077 is an equidigital number, since it uses as much as digits as its factorization.

1230129077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 1230129077 is about 35073.1959906707. The cubic root of 1230129077 is about 1071.4787476277.

Adding to 1230129077 its reverse (7709210321), we get a palindrome (8939339398).

The spelling of 1230129077 in words is "one billion, two hundred thirty million, one hundred twenty-nine thousand, seventy-seven".