123648901 has 2 divisors, whose sum is σ = 123648902. Its totient is φ = 123648900.

The previous prime is 123648881. The next prime is 123648911. The reversal of 123648901 is 109846321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110796676 + 12852225 = 10526^2 + 3585^2 .

It is a cyclic number.

It is not a de Polignac number, because 123648901 - 2⁷ = 123648773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123648911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61824450 + 61824451.

It is an arithmetic number, because the mean of its divisors is an integer number (61824451).

Almost surely, 2^123648901 is an apocalyptic number.

It is an amenable number.

123648901 is a deficient number, since it is larger than the sum of its proper divisors (1).

123648901 is an equidigital number, since it uses as much as digits as its factorization.

123648901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 123648901 is about 11119.7527400568. The cubic root of 123648901 is about 498.1920048538.

The spelling of 123648901 in words is "one hundred twenty-three million, six hundred forty-eight thousand, nine hundred one".