123840975268 has 12 divisors (see below), whose sum is σ = 219690497740. Its totient is φ = 61072261632.

The previous prime is 123840975263. The next prime is 123840975277. The reversal of 123840975268 is 862579048321.

123840975268 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22100390244 + 101740585024 = 148662^2 + 318968^2 .

It is not an unprimeable number, because it can be changed into a prime (123840975263) 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, 212056173 + ... + 212056756.

It is a 2-persistent number, because it is pandigital, and so is 2⋅123840975268 = 247681950536, but 3⋅123840975268 = 371522925804 is not.

Almost surely, 2^123840975268 is an apocalyptic number.

It is an amenable number.

123840975268 is a deficient number, since it is larger than the sum of its proper divisors (95849522472).

123840975268 is a wasteful number, since it uses less digits than its factorization.

123840975268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424113006 (or 424113004 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 123840975268 in words is "one hundred twenty-three billion, eight hundred forty million, nine hundred seventy-five thousand, two hundred sixty-eight".