123143302140 has 96 divisors (see below), whose sum is σ = 347566089024. Its totient is φ = 32575242240.

The previous prime is 123143302109. The next prime is 123143302141. The reversal of 123143302140 is 41203341321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 123143302140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123143302141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13616020 + ... + 13625060.

It is an arithmetic number, because the mean of its divisors is an integer number (3620480094).

Almost surely, 2^123143302140 is an apocalyptic number.

123143302140 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 123143302140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173783044512).

123143302140 is an abundant number, since it is smaller than the sum of its proper divisors (224422786884).

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

123143302140 is a wasteful number, since it uses less digits than its factorization.

123143302140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10847 (or 10845 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123143302140 its reverse (41203341321), we get a palindrome (164346643461).

The spelling of 123143302140 in words is "one hundred twenty-three billion, one hundred forty-three million, three hundred two thousand, one hundred forty".