123988577 has 2 divisors, whose sum is σ = 123988578. Its totient is φ = 123988576.

The previous prime is 123988549. The next prime is 123988583. The reversal of 123988577 is 775889321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82011136 + 41977441 = 9056^2 + 6479^2 .

It is an emirp because it is prime and its reverse (775889321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123988577 - 2⁸ = 123988321 is a prime.

It is not a weakly prime, because it can be changed into another prime (123988537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61994288 + 61994289.

It is an arithmetic number, because the mean of its divisors is an integer number (61994289).

Almost surely, 2^123988577 is an apocalyptic number.

It is an amenable number.

123988577 is a deficient number, since it is larger than the sum of its proper divisors (1).

123988577 is an equidigital number, since it uses as much as digits as its factorization.

123988577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 50.

The square root of 123988577 is about 11135.0158060058. The cubic root of 123988577 is about 498.6477823113.

The spelling of 123988577 in words is "one hundred twenty-three million, nine hundred eighty-eight thousand, five hundred seventy-seven".