123030779 has 2 divisors, whose sum is σ = 123030780. Its totient is φ = 123030778.

The previous prime is 123030767. The next prime is 123030781. The reversal of 123030779 is 977030321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123030779 - 2⁴ = 123030763 is a prime.

Together with 123030781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123030079) 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, 61515389 + 61515390.

It is an arithmetic number, because the mean of its divisors is an integer number (61515390).

Almost surely, 2^123030779 is an apocalyptic number.

123030779 is a deficient number, since it is larger than the sum of its proper divisors (1).

123030779 is an equidigital number, since it uses as much as digits as its factorization.

123030779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 123030779 is about 11091.9240440962. The cubic root of 123030779 is about 497.3604622005.

The spelling of 123030779 in words is "one hundred twenty-three million, thirty thousand, seven hundred seventy-nine".