842271899 has 4 divisors (see below), whose sum is σ = 962596464. Its totient is φ = 721947336.

The previous prime is 842271887. The next prime is 842271901. The reversal of 842271899 is 998172248.

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

It is a cyclic number.

It is not a de Polignac number, because 842271899 - 2¹⁶ = 842206363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842271839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60162272 + ... + 60162285.

It is an arithmetic number, because the mean of its divisors is an integer number (240649116).

Almost surely, 2^842271899 is an apocalyptic number.

842271899 is a deficient number, since it is larger than the sum of its proper divisors (120324565).

842271899 is a wasteful number, since it uses less digits than its factorization.

842271899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120324564.

The product of its digits is 580608, while the sum is 50.

The square root of 842271899 is about 29021.9210080932. The cubic root of 842271899 is about 944.3886750978.

The spelling of 842271899 in words is "eight hundred forty-two million, two hundred seventy-one thousand, eight hundred ninety-nine".