842268689 has 16 divisors (see below), whose sum is σ = 941402880. Its totient is φ = 748880640.

The previous prime is 842268643. The next prime is 842268697. The reversal of 842268689 is 986862248.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842268689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 842268689.

It is not an unprimeable number, because it can be changed into a prime (842268989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116984 + ... + 123974.

It is an arithmetic number, because the mean of its divisors is an integer number (58837680).

Almost surely, 2^842268689 is an apocalyptic number.

It is an amenable number.

842268689 is a deficient number, since it is larger than the sum of its proper divisors (99134191).

842268689 is a wasteful number, since it uses less digits than its factorization.

842268689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7400.

The product of its digits is 2654208, while the sum is 53.

The square root of 842268689 is about 29021.8657050163. The cubic root of 842268689 is about 944.3874753698.

The spelling of 842268689 in words is "eight hundred forty-two million, two hundred sixty-eight thousand, six hundred eighty-nine".