123404120448 has 512 divisors, whose sum is σ = 396317491200. Its totient is φ = 33295933440.

The previous prime is 123404120429. The next prime is 123404120467. The reversal of 123404120448 is 844021404321.

It is an interprime number because it is at equal distance from previous prime (123404120429) and next prime (123404120467).

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 63 ways as a sum of consecutive naturals, for example, 516335113 + ... + 516335351.

It is an arithmetic number, because the mean of its divisors is an integer number (774057600).

Almost surely, 2^123404120448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123404120448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198158745600).

123404120448 is an abundant number, since it is smaller than the sum of its proper divisors (272913370752).

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

123404120448 is a wasteful number, since it uses less digits than its factorization.

123404120448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

Adding to 123404120448 its reverse (844021404321), we get a palindrome (967425524769).

The spelling of 123404120448 in words is "one hundred twenty-three billion, four hundred four million, one hundred twenty thousand, four hundred forty-eight".