842120005 has 8 divisors (see below), whose sum is σ = 1011216672. Its totient is φ = 673247568.

The previous prime is 842120003. The next prime is 842120011. The reversal of 842120005 is 500021248.

842120005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 842120005 - 2¹ = 842120003 is a prime.

It is a super-2 number, since 2×842120005² = 1418332205642400050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842120003) 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, 47679 + ... + 62908.

It is an arithmetic number, because the mean of its divisors is an integer number (126402084).

Almost surely, 2^842120005 is an apocalyptic number.

It is an amenable number.

842120005 is a deficient number, since it is larger than the sum of its proper divisors (169096667).

842120005 is a wasteful number, since it uses less digits than its factorization.

842120005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112115.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 842120005 is about 29019.3040061267. The cubic root of 842120005 is about 944.3319018248.

The spelling of 842120005 in words is "eight hundred forty-two million, one hundred twenty thousand, five".