123230243040 has 96 divisors (see below), whose sum is σ = 389200049280. Its totient is φ = 32774644224.

The previous prime is 123230242987. The next prime is 123230243057. The reversal of 123230243040 is 40342032321.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 123230243040.

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, 156774 + ... + 520613.

It is an arithmetic number, because the mean of its divisors is an integer number (4054167180).

Almost surely, 2^123230243040 is an apocalyptic number.

123230243040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123230243040 is an abundant number, since it is smaller than the sum of its proper divisors (265969806240).

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

123230243040 is a wasteful number, since it uses less digits than its factorization.

123230243040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677784 (or 677776 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 123230243040 its reverse (40342032321), we get a palindrome (163572275361).

The spelling of 123230243040 in words is "one hundred twenty-three billion, two hundred thirty million, two hundred forty-three thousand, forty".