123405439348 has 12 divisors (see below), whose sum is σ = 220034227140. Its totient is φ = 60538517312.

The previous prime is 123405439319. The next prime is 123405439357. The reversal of 123405439348 is 843934504321.

It can be written as a sum of positive squares in 2 ways, for example, as 37188036964 + 86217402384 = 192842^2 + 293628^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123405439298 and 123405439307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291050353 + ... + 291050776.

It is an arithmetic number, because the mean of its divisors is an integer number (18336185595).

Almost surely, 2^123405439348 is an apocalyptic number.

It is an amenable number.

123405439348 is a deficient number, since it is larger than the sum of its proper divisors (96628787792).

123405439348 is a wasteful number, since it uses less digits than its factorization.

123405439348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582101186 (or 582101184 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 123405439348 in words is "one hundred twenty-three billion, four hundred five million, four hundred thirty-nine thousand, three hundred forty-eight".