123304401052540 has 12 divisors (see below), whose sum is σ = 258939242210376. Its totient is φ = 49321760421008.

The previous prime is 123304401052519. The next prime is 123304401052667. The reversal of 123304401052540 is 45250104403321.

It is a junction number, because it is equal to n+sod(n) for n = 123304401052496 and 123304401052505.

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 3 ways as a sum of consecutive naturals, for example, 3082610026294 + ... + 3082610026333.

It is an arithmetic number, because the mean of its divisors is an integer number (21578270184198).

Almost surely, 2^{123304401052540} is an apocalyptic number.

123304401052540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123304401052540 is an abundant number, since it is smaller than the sum of its proper divisors (135634841157836).

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

123304401052540 is a wasteful number, since it uses less digits than its factorization.

123304401052540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6165220052636 (or 6165220052634 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 123304401052540 its reverse (45250104403321), we get a palindrome (168554505455861).

The spelling of 123304401052540 in words is "one hundred twenty-three trillion, three hundred four billion, four hundred one million, fifty-two thousand, five hundred forty".