123235534211340 has 192 divisors, whose sum is σ = 357617907924480. Its totient is φ = 31683853209600.

The previous prime is 123235534211333. The next prime is 123235534211341. The reversal of 123235534211340 is 43112435532321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123235534211341) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 161005540 + ... + 161769140.

It is an arithmetic number, because the mean of its divisors is an integer number (1862593270440).

Almost surely, 2^{123235534211340} is an apocalyptic number.

123235534211340 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 123235534211340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178808953962240).

123235534211340 is an abundant number, since it is smaller than the sum of its proper divisors (234382373713140).

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

123235534211340 is a wasteful number, since it uses less digits than its factorization.

123235534211340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764312 (or 764310 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 123235534211340 its reverse (43112435532321), we get a palindrome (166347969743661).

The spelling of 123235534211340 in words is "one hundred twenty-three trillion, two hundred thirty-five billion, five hundred thirty-four million, two hundred eleven thousand, three hundred forty".