123122929 has 2 divisors, whose sum is σ = 123122930. Its totient is φ = 123122928.

The previous prime is 123122927. The next prime is 123122941. The reversal of 123122929 is 929221321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97061904 + 26061025 = 9852^2 + 5105^2 .

It is a cyclic number.

It is not a de Polignac number, because 123122929 - 2¹ = 123122927 is a prime.

Together with 123122927, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 123122929.

It is not a weakly prime, because it can be changed into another prime (123122927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61561464 + 61561465.

It is an arithmetic number, because the mean of its divisors is an integer number (61561465).

Almost surely, 2^123122929 is an apocalyptic number.

It is an amenable number.

123122929 is a deficient number, since it is larger than the sum of its proper divisors (1).

123122929 is an equidigital number, since it uses as much as digits as its factorization.

123122929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 123122929 is about 11096.0771897099. The cubic root of 123122929 is about 497.4846054679.

The spelling of 123122929 in words is "one hundred twenty-three million, one hundred twenty-two thousand, nine hundred twenty-nine".