123400104048 has 160 divisors (see below), whose sum is σ = 382242201600. Its totient is φ = 37890457344.

The previous prime is 123400104043. The next prime is 123400104049. The reversal of 123400104048 is 840401004321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123400104041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2712433 + ... + 2757551.

It is an arithmetic number, because the mean of its divisors is an integer number (2389013760).

Almost surely, 2^123400104048 is an apocalyptic number.

123400104048 is a gapful number since it is divisible by the number (18) 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 123400104048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191121100800).

123400104048 is an abundant number, since it is smaller than the sum of its proper divisors (258842097552).

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

123400104048 is a wasteful number, since it uses less digits than its factorization.

123400104048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45636 (or 45624 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 123400104048 its reverse (840401004321), we get a palindrome (963801108369).

The spelling of 123400104048 in words is "one hundred twenty-three billion, four hundred million, one hundred four thousand, forty-eight".