7842841 has 4 divisors (see below), whose sum is σ = 7868212. Its totient is φ = 7817472.

The previous prime is 7842833. The next prime is 7842851. The reversal of 7842841 is 1482487.

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

It can be written as a sum of positive squares in 2 ways, for example, as 633616 + 7209225 = 796^2 + 2685^2 .

It is a cyclic number.

It is not a de Polignac number, because 7842841 - 2³ = 7842833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7842797 and 7842806.

It is not an unprimeable number, because it can be changed into a prime (7842851) 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, 12216 + ... + 12841.

It is an arithmetic number, because the mean of its divisors is an integer number (1967053).

Almost surely, 2^7842841 is an apocalyptic number.

It is an amenable number.

7842841 is a deficient number, since it is larger than the sum of its proper divisors (25371).

7842841 is a wasteful number, since it uses less digits than its factorization.

7842841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25370.

The product of its digits is 14336, while the sum is 34.

The square root of 7842841 is about 2800.5072754771. The cubic root of 7842841 is about 198.6816708010.

The spelling of 7842841 in words is "seven million, eight hundred forty-two thousand, eight hundred forty-one".