123110103440 has 40 divisors (see below), whose sum is σ = 286246467000. Its totient is φ = 49241378816.

The previous prime is 123110103433. The next prime is 123110103499. The reversal of 123110103440 is 44301011321.

It can be written as a sum of positive squares in 4 ways, for example, as 3855913216 + 119254190224 = 62096^2 + 345332^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 2192192 + ... + 2247648.

It is an arithmetic number, because the mean of its divisors is an integer number (7156161675).

Almost surely, 2^123110103440 is an apocalyptic number.

123110103440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123110103440 is an abundant number, since it is smaller than the sum of its proper divisors (163136363560).

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

123110103440 is a wasteful number, since it uses less digits than its factorization.

123110103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83219 (or 83213 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123110103440 its reverse (44301011321), we get a palindrome (167411114761).

The spelling of 123110103440 in words is "one hundred twenty-three billion, one hundred ten million, one hundred three thousand, four hundred forty".