385772123 has 16 divisors (see below), whose sum is σ = 454291200. Its totient is φ = 323880480.

The previous prime is 385772119. The next prime is 385772161. The reversal of 385772123 is 321277583.

It is not a de Polignac number, because 385772123 - 2² = 385772119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385772623) 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 in 15 ways as a sum of consecutive naturals, for example, 18953 + ... + 33626.

It is an arithmetic number, because the mean of its divisors is an integer number (28393200).

Almost surely, 2^385772123 is an apocalyptic number.

385772123 is a deficient number, since it is larger than the sum of its proper divisors (68519077).

385772123 is a wasteful number, since it uses less digits than its factorization.

385772123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52642.

The product of its digits is 70560, while the sum is 38.

The square root of 385772123 is about 19641.0825312659. The cubic root of 385772123 is about 727.9646330633.

The spelling of 385772123 in words is "three hundred eighty-five million, seven hundred seventy-two thousand, one hundred twenty-three".