842444681 has 8 divisors (see below), whose sum is σ = 907712064. Its totient is φ = 777243600.

The previous prime is 842444677. The next prime is 842444689. The reversal of 842444681 is 186444248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 842444681 - 2² = 842444677 is a prime.

It is a super-2 number, since 2×842444681² = 1419426081090383522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842444689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11606 + ... + 42656.

It is an arithmetic number, because the mean of its divisors is an integer number (113464008).

Almost surely, 2^842444681 is an apocalyptic number.

It is an amenable number.

842444681 is a deficient number, since it is larger than the sum of its proper divisors (65267383).

842444681 is a wasteful number, since it uses less digits than its factorization.

842444681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33151.

The product of its digits is 196608, while the sum is 41.

The square root of 842444681 is about 29024.8976053319. The cubic root of 842444681 is about 944.4532473607.

The spelling of 842444681 in words is "eight hundred forty-two million, four hundred forty-four thousand, six hundred eighty-one".