123204305240 has 16 divisors (see below), whose sum is σ = 277209686880. Its totient is φ = 49281722080.

The previous prime is 123204305239. The next prime is 123204305297. The reversal of 123204305240 is 42503402321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1540053776 + ... + 1540053855.

It is an arithmetic number, because the mean of its divisors is an integer number (17325605430).

Almost surely, 2^123204305240 is an apocalyptic number.

123204305240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123204305240 is an abundant number, since it is smaller than the sum of its proper divisors (154005381640).

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

123204305240 is a wasteful number, since it uses less digits than its factorization.

123204305240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080107642 (or 3080107638 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 123204305240 its reverse (42503402321), we get a palindrome (165707707561).

The spelling of 123204305240 in words is "one hundred twenty-three billion, two hundred four million, three hundred five thousand, two hundred forty".