385753683242 has 4 divisors (see below), whose sum is σ = 578630524866. Its totient is φ = 192876841620.

The previous prime is 385753683229. The next prime is 385753683257. The reversal of 385753683242 is 242386357583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242386357583 = 3187 ⋅76054709.

It can be written as a sum of positive squares in only one way, i.e., 285392076841 + 100361606401 = 534221^2 + 316799^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96438420809 + ... + 96438420812.

Almost surely, 2^385753683242 is an apocalyptic number.

385753683242 is a deficient number, since it is larger than the sum of its proper divisors (192876841624).

385753683242 is a wasteful number, since it uses less digits than its factorization.

385753683242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192876841623.

The product of its digits is 29030400, while the sum is 56.

The spelling of 385753683242 in words is "three hundred eighty-five billion, seven hundred fifty-three million, six hundred eighty-three thousand, two hundred forty-two".