123300402215540 has 96 divisors (see below), whose sum is σ = 285606796366080. Its totient is φ = 44339666048000.

The previous prime is 123300402215537. The next prime is 123300402215563. The reversal of 123300402215540 is 45512204003321.

It is a junction number, because it is equal to n+sod(n) for n = 123300402215497 and 123300402215506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15335624 + ... + 21949536.

It is an arithmetic number, because the mean of its divisors is an integer number (2975070795480).

Almost surely, 2^{123300402215540} is an apocalyptic number.

123300402215540 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 123300402215540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142803398183040).

123300402215540 is an abundant number, since it is smaller than the sum of its proper divisors (162306394150540).

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

123300402215540 is a wasteful number, since it uses less digits than its factorization.

123300402215540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6614873 (or 6614871 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 123300402215540 its reverse (45512204003321), we get a palindrome (168812606218861).

The spelling of 123300402215540 in words is "one hundred twenty-three trillion, three hundred billion, four hundred two million, two hundred fifteen thousand, five hundred forty".