123340425432 has 128 divisors (see below), whose sum is σ = 357145804800. Its totient is φ = 34766379648.

The previous prime is 123340425427. The next prime is 123340425449. The reversal of 123340425432 is 234524043321.

It is a junction number, because it is equal to n+sod(n) for n = 123340425393 and 123340425402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21325213 + ... + 21330995.

It is an arithmetic number, because the mean of its divisors is an integer number (2790201600).

Almost surely, 2^123340425432 is an apocalyptic number.

123340425432 is a gapful number since it is divisible by the number (12) 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 123340425432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178572902400).

123340425432 is an abundant number, since it is smaller than the sum of its proper divisors (233805379368).

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

123340425432 is a wasteful number, since it uses less digits than its factorization.

123340425432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7485 (or 7481 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 123340425432 its reverse (234524043321), we get a palindrome (357864468753).

The spelling of 123340425432 in words is "one hundred twenty-three billion, three hundred forty million, four hundred twenty-five thousand, four hundred thirty-two".