385242771 has 4 divisors (see below), whose sum is σ = 513657032. Its totient is φ = 256828512.

The previous prime is 385242761. The next prime is 385242773. The reversal of 385242771 is 177242583.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 385242771 - 2⁷ = 385242643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385242773) 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 in 3 ways as a sum of consecutive naturals, for example, 64207126 + ... + 64207131.

It is an arithmetic number, because the mean of its divisors is an integer number (128414258).

Almost surely, 2^385242771 is an apocalyptic number.

385242771 is a deficient number, since it is larger than the sum of its proper divisors (128414261).

385242771 is a wasteful number, since it uses less digits than its factorization.

385242771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128414260.

The product of its digits is 94080, while the sum is 39.

The square root of 385242771 is about 19627.6022733293. The cubic root of 385242771 is about 727.6315124606.

The spelling of 385242771 in words is "three hundred eighty-five million, two hundred forty-two thousand, seven hundred seventy-one".