123440103 has 48 divisors (see below), whose sum is σ = 194628096. Its totient is φ = 75176640.

The previous prime is 123440101. The next prime is 123440113. The reversal of 123440103 is 301044321.

123440103 is a `hidden beast` number, since 123 + 440 + 103 = 666.

It is not a de Polignac number, because 123440103 - 2¹ = 123440101 is a prime.

It is a super-3 number, since 3×123440103³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123440101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 543676 + ... + 543902.

It is an arithmetic number, because the mean of its divisors is an integer number (4054752).

Almost surely, 2^123440103 is an apocalyptic number.

123440103 is a deficient number, since it is larger than the sum of its proper divisors (71187993).

123440103 is a wasteful number, since it uses less digits than its factorization.

123440103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123440103 is about 11110.3601651792. The cubic root of 123440103 is about 497.9114251914.

Adding to 123440103 its reverse (301044321), we get a palindrome (424484424).

The spelling of 123440103 in words is "one hundred twenty-three million, four hundred forty thousand, one hundred three".