123220441440 has 144 divisors (see below), whose sum is σ = 429436582848. Its totient is φ = 32159643648.

The previous prime is 123220441439. The next prime is 123220441441. The reversal of 123220441440 is 44144022321.

123220441440 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 204 + 414 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (123220441439) and next prime (123220441441).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220441441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 842637 + ... + 977996.

It is an arithmetic number, because the mean of its divisors is an integer number (2982198492).

Almost surely, 2^123220441440 is an apocalyptic number.

123220441440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123220441440 is an abundant number, since it is smaller than the sum of its proper divisors (306216141408).

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

123220441440 is a wasteful number, since it uses less digits than its factorization.

123220441440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820701 (or 1820690 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 123220441440 its reverse (44144022321), we get a palindrome (167364463761).

The spelling of 123220441440 in words is "one hundred twenty-three billion, two hundred twenty million, four hundred forty-one thousand, four hundred forty".