820424243034123 has 32 divisors (see below), whose sum is σ = 1346358384462336. Its totient is φ = 432744445997568.

The previous prime is 820424243034113. The next prime is 820424243034203. The reversal of 820424243034123 is 321430342424028.

820424243034123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 820424243034123 - 2⁸ = 820424243033867 is a prime.

It is a super-2 number, since 2×820424243034123² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (820424243034113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6200661 + ... + 40979222.

It is an arithmetic number, because the mean of its divisors is an integer number (42073699514448).

Almost surely, 2^{820424243034123} is an apocalyptic number.

820424243034123 is a deficient number, since it is larger than the sum of its proper divisors (525934141428213).

820424243034123 is a wasteful number, since it uses less digits than its factorization.

820424243034123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47243603.

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 820424243034123 in words is "eight hundred twenty trillion, four hundred twenty-four billion, two hundred forty-three million, thirty-four thousand, one hundred twenty-three".