385204123 has 2 divisors, whose sum is σ = 385204124. Its totient is φ = 385204122.

The previous prime is 385204121. The next prime is 385204163. The reversal of 385204123 is 321402583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385204123 - 2¹ = 385204121 is a prime.

Together with 385204121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 385204091 and 385204100.

It is not a weakly prime, because it can be changed into another prime (385204121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192602061 + 192602062.

It is an arithmetic number, because the mean of its divisors is an integer number (192602062).

Almost surely, 2^385204123 is an apocalyptic number.

385204123 is a deficient number, since it is larger than the sum of its proper divisors (1).

385204123 is an equidigital number, since it uses as much as digits as its factorization.

385204123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 385204123 is about 19626.6177167641. The cubic root of 385204123 is about 727.6071793688.

The spelling of 385204123 in words is "three hundred eighty-five million, two hundred four thousand, one hundred twenty-three".