123501201340 has 96 divisors (see below), whose sum is σ = 287199779328. Its totient is φ = 44233056000.

The previous prime is 123501201311. The next prime is 123501201349. The reversal of 123501201340 is 43102105321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123501201349) 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, 18537610 + ... + 18544270.

It is an arithmetic number, because the mean of its divisors is an integer number (2991664368).

Almost surely, 2^123501201340 is an apocalyptic number.

123501201340 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 123501201340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143599889664).

123501201340 is an abundant number, since it is smaller than the sum of its proper divisors (163698577988).

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

123501201340 is a wasteful number, since it uses less digits than its factorization.

123501201340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939 (or 7937 counting only the distinct ones).

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

Adding to 123501201340 its reverse (43102105321), we get a palindrome (166603306661).

The spelling of 123501201340 in words is "one hundred twenty-three billion, five hundred one million, two hundred one thousand, three hundred forty".