123542324977 has 2 divisors, whose sum is σ = 123542324978. Its totient is φ = 123542324976.

The previous prime is 123542324957. The next prime is 123542324981. The reversal of 123542324977 is 779423245321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90895617121 + 32646707856 = 301489^2 + 180684^2 .

It is a cyclic number.

It is not a de Polignac number, because 123542324977 - 2⁷ = 123542324849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123542324977.

It is not a weakly prime, because it can be changed into another prime (123542324947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61771162488 + 61771162489.

It is an arithmetic number, because the mean of its divisors is an integer number (61771162489).

Almost surely, 2^123542324977 is an apocalyptic number.

It is an amenable number.

123542324977 is a deficient number, since it is larger than the sum of its proper divisors (1).

123542324977 is an equidigital number, since it uses as much as digits as its factorization.

123542324977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 49.

The spelling of 123542324977 in words is "one hundred twenty-three billion, five hundred forty-two million, three hundred twenty-four thousand, nine hundred seventy-seven".