842393066 has 4 divisors (see below), whose sum is σ = 1263589602. Its totient is φ = 421196532.

The previous prime is 842393059. The next prime is 842393089. The reversal of 842393066 is 660393248.

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

It can be written as a sum of positive squares in only one way, i.e., 817102225 + 25290841 = 28585^2 + 5029^2 .

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 as a sum of consecutive naturals, namely, 210598265 + ... + 210598268.

Almost surely, 2^842393066 is an apocalyptic number.

842393066 is a deficient number, since it is larger than the sum of its proper divisors (421196536).

842393066 is a wasteful number, since it uses less digits than its factorization.

842393066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421196535.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 842393066 is about 29024.0084412887. The cubic root of 842393066 is about 944.4339586758.

The spelling of 842393066 in words is "eight hundred forty-two million, three hundred ninety-three thousand, sixty-six".