841212643 has 4 divisors (see below), whose sum is σ = 842707368. Its totient is φ = 839717920.

The previous prime is 841212637. The next prime is 841212667. The reversal of 841212643 is 346212148.

841212643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 841212643 - 2²¹ = 839115491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (841212943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746518 + ... + 747643.

It is an arithmetic number, because the mean of its divisors is an integer number (210676842).

Almost surely, 2^841212643 is an apocalyptic number.

841212643 is a deficient number, since it is larger than the sum of its proper divisors (1494725).

841212643 is a wasteful number, since it uses less digits than its factorization.

841212643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494724.

The product of its digits is 9216, while the sum is 31.

The square root of 841212643 is about 29003.6660269008. Note that the first 3 decimals coincide. The cubic root of 841212643 is about 943.9926157345.

The spelling of 841212643 in words is "eight hundred forty-one million, two hundred twelve thousand, six hundred forty-three".