123321340140 has 48 divisors (see below), whose sum is σ = 345847084800. Its totient is φ = 32833563840.

The previous prime is 123321340081. The next prime is 123321340159. The reversal of 123321340140 is 41043123321.

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 123321340140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1590790 + ... + 1666509.

It is an arithmetic number, because the mean of its divisors is an integer number (7205147600).

Almost surely, 2^123321340140 is an apocalyptic number.

123321340140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123321340140 is an abundant number, since it is smaller than the sum of its proper divisors (222525744660).

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

123321340140 is a wasteful number, since it uses less digits than its factorization.

123321340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257942 (or 3257940 counting only the distinct ones).

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

Adding to 123321340140 its reverse (41043123321), we get a palindrome (164364463461).

The spelling of 123321340140 in words is "one hundred twenty-three billion, three hundred twenty-one million, three hundred forty thousand, one hundred forty".