123038349979 has 2 divisors, whose sum is σ = 123038349980. Its totient is φ = 123038349978.

The previous prime is 123038349911. The next prime is 123038350021. The reversal of 123038349979 is 979943830321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123038349979 - 2¹¹ = 123038347931 is a prime.

It is not a weakly prime, because it can be changed into another prime (123038349479) 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, 61519174989 + 61519174990.

It is an arithmetic number, because the mean of its divisors is an integer number (61519174990).

Almost surely, 2^123038349979 is an apocalyptic number.

123038349979 is a deficient number, since it is larger than the sum of its proper divisors (1).

123038349979 is an equidigital number, since it uses as much as digits as its factorization.

123038349979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 123038349979 in words is "one hundred twenty-three billion, thirty-eight million, three hundred forty-nine thousand, nine hundred seventy-nine".