842388705 has 24 divisors (see below), whose sum is σ = 1494100608. Its totient is φ = 438824736.

The previous prime is 842388667. The next prime is 842388707. The reversal of 842388705 is 507883248.

842388705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 842388705 - 2⁷ = 842388577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (842388707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215737 + ... + 219606.

It is an arithmetic number, because the mean of its divisors is an integer number (62254192).

Almost surely, 2^842388705 is an apocalyptic number.

It is an amenable number.

842388705 is a deficient number, since it is larger than the sum of its proper divisors (651711903).

842388705 is a wasteful number, since it uses less digits than its factorization.

842388705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435397 (or 435394 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 842388705 is about 29023.9333137327. The cubic root of 842388705 is about 944.4323289206.

The spelling of 842388705 in words is "eight hundred forty-two million, three hundred eighty-eight thousand, seven hundred five".