123255030400 has 96 divisors (see below), whose sum is σ = 304793527680. Its totient is φ = 49250995200.

The previous prime is 123255030389. The next prime is 123255030401. The reversal of 123255030400 is 4030552321.

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

It is not an unprimeable number, because it can be changed into a prime (123255030401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3151767 + ... + 3190633.

It is an arithmetic number, because the mean of its divisors is an integer number (3174932580).

Almost surely, 2^123255030400 is an apocalyptic number.

123255030400 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 123255030400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152396763840).

123255030400 is an abundant number, since it is smaller than the sum of its proper divisors (181538497280).

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

123255030400 is an equidigital number, since it uses as much as digits as its factorization.

123255030400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39882 (or 39865 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 123255030400 its reverse (4030552321), we get a palindrome (127285582721).

The spelling of 123255030400 in words is "one hundred twenty-three billion, two hundred fifty-five million, thirty thousand, four hundred".