123102029 has 2 divisors, whose sum is σ = 123102030. Its totient is φ = 123102028.

The previous prime is 123102011. The next prime is 123102037. The reversal of 123102029 is 920201321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111724900 + 11377129 = 10570^2 + 3373^2 .

It is a cyclic number.

It is not a de Polignac number, because 123102029 - 2¹⁶ = 123036493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123102029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23102029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551014 + 61551015.

It is an arithmetic number, because the mean of its divisors is an integer number (61551015).

Almost surely, 2^123102029 is an apocalyptic number.

It is an amenable number.

123102029 is a deficient number, since it is larger than the sum of its proper divisors (1).

123102029 is an equidigital number, since it uses as much as digits as its factorization.

123102029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 123102029 is about 11095.1353754697. The cubic root of 123102029 is about 497.4564546956.

The spelling of 123102029 in words is "one hundred twenty-three million, one hundred two thousand, twenty-nine".