385456842 has 12 divisors (see below), whose sum is σ = 835156530. Its totient is φ = 128485608.

The previous prime is 385456817. The next prime is 385456901. The reversal of 385456842 is 248654583.

385456842 is a `hidden beast` number, since 3 + 8 + 545 + 68 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 385297641 + 159201 = 19629^2 + 399^2 .

It is a super-2 number, since 2×385456842² = 297153954089225928, which contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 10707117 + ... + 10707152.

Almost surely, 2^385456842 is an apocalyptic number.

385456842 is an abundant number, since it is smaller than the sum of its proper divisors (449699688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385456842 is a wasteful number, since it uses less digits than its factorization.

385456842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21414277 (or 21414274 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 385456842 is about 19633.0548310751. The cubic root of 385456842 is about 727.7662638213.

The spelling of 385456842 in words is "three hundred eighty-five million, four hundred fifty-six thousand, eight hundred forty-two".