123203115040 has 96 divisors (see below), whose sum is σ = 302536866240. Its totient is φ = 47371428864.

The previous prime is 123203115029. The next prime is 123203115047. The reversal of 123203115040 is 40511302321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123203115047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365991 + ... + 616729.

It is an arithmetic number, because the mean of its divisors is an integer number (3151425690).

Almost surely, 2^123203115040 is an apocalyptic number.

123203115040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123203115040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151268433120).

123203115040 is an abundant number, since it is smaller than the sum of its proper divisors (179333751200).

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

123203115040 is a wasteful number, since it uses less digits than its factorization.

123203115040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250874 (or 250866 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 123203115040 its reverse (40511302321), we get a palindrome (163714417361).

The spelling of 123203115040 in words is "one hundred twenty-three billion, two hundred three million, one hundred fifteen thousand, forty".