123042504997 has 2 divisors, whose sum is σ = 123042504998. Its totient is φ = 123042504996.

The previous prime is 123042504943. The next prime is 123042505007. The reversal of 123042504997 is 799405240321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84286283041 + 38756221956 = 290321^2 + 196866^2 .

It is a cyclic number.

It is not a de Polignac number, because 123042504997 - 2⁷ = 123042504869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123042504097) 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, 61521252498 + 61521252499.

It is an arithmetic number, because the mean of its divisors is an integer number (61521252499).

Almost surely, 2^123042504997 is an apocalyptic number.

It is an amenable number.

123042504997 is a deficient number, since it is larger than the sum of its proper divisors (1).

123042504997 is an equidigital number, since it uses as much as digits as its factorization.

123042504997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 123042504997 in words is "one hundred twenty-three billion, forty-two million, five hundred four thousand, nine hundred ninety-seven".