123304044400 has 120 divisors (see below), whose sum is σ = 307091394000. Its totient is φ = 47521689600.

The previous prime is 123304044373. The next prime is 123304044419. The reversal of 123304044400 is 4440403321.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5684776 + ... + 5706424.

It is an arithmetic number, because the mean of its divisors is an integer number (2559094950).

Almost surely, 2^123304044400 is an apocalyptic number.

123304044400 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 123304044400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153545697000).

123304044400 is an abundant number, since it is smaller than the sum of its proper divisors (183787349600).

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

123304044400 is a wasteful number, since it uses less digits than its factorization.

123304044400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22187 (or 22176 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 123304044400 its reverse (4440403321), we get a palindrome (127744447721).

The spelling of 123304044400 in words is "one hundred twenty-three billion, three hundred four million, forty-four thousand, four hundred".