841065121 has 4 divisors (see below), whose sum is σ = 905762452. Its totient is φ = 776367792.

The previous prime is 841065073. The next prime is 841065149. The reversal of 841065121 is 121560148.

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 244484496 + 596580625 = 15636^2 + 24425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-841065121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 841065121.

It is not an unprimeable number, because it can be changed into a prime (841062121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32348646 + ... + 32348671.

It is an arithmetic number, because the mean of its divisors is an integer number (226440613).

Almost surely, 2^841065121 is an apocalyptic number.

It is an amenable number.

841065121 is a deficient number, since it is larger than the sum of its proper divisors (64697331).

841065121 is a wasteful number, since it uses less digits than its factorization.

841065121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64697330.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 841065121 is about 29001.1227541280. The cubic root of 841065121 is about 943.9374303934.

The spelling of 841065121 in words is "eight hundred forty-one million, sixty-five thousand, one hundred twenty-one".