834321123438 has 32 divisors (see below), whose sum is σ = 1820470152960. Its totient is φ = 252806088960.

The previous prime is 834321123379. The next prime is 834321123443.

834321123438 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 834321123438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460606 + ... + 1371422.

It is an arithmetic number, because the mean of its divisors is an integer number (56889692280).

Almost surely, 2^834321123438 is an apocalyptic number.

834321123438 is an abundant number, since it is smaller than the sum of its proper divisors (986149029522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

834321123438 is a wasteful number, since it uses less digits than its factorization.

834321123438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924712.

The product of its digits is 331776, while the sum is 42.

It can be divided in two parts, 834321 and 123438, that added together give a palindrome (957759).

The spelling of 834321123438 in words is "eight hundred thirty-four billion, three hundred twenty-one million, one hundred twenty-three thousand, four hundred thirty-eight".