123340040340 has 96 divisors (see below), whose sum is σ = 379714535424. Its totient is φ = 29665157760.

The previous prime is 123340040339. The next prime is 123340040353. The reversal of 123340040340 is 43040043321.

It is a self number, because there is not a number n which added to its sum of digits gives 123340040340.

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, 651924 + ... + 819563.

It is an arithmetic number, because the mean of its divisors is an integer number (3955359744).

Almost surely, 2^123340040340 is an apocalyptic number.

123340040340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123340040340 is an abundant number, since it is smaller than the sum of its proper divisors (256374495084).

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

123340040340 is a wasteful number, since it uses less digits than its factorization.

123340040340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471637 (or 1471635 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 123340040340 its reverse (43040043321), we get a palindrome (166380083661).

The spelling of 123340040340 in words is "one hundred twenty-three billion, three hundred forty million, forty thousand, three hundred forty".