123440106 has 8 divisors (see below), whose sum is σ = 246880224. Its totient is φ = 41146700.

The previous prime is 123440101. The next prime is 123440113. The reversal of 123440106 is 601044321.

It is a sphenic number, since it is the product of 3 distinct primes.

123440106 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123440101) 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 3 ways as a sum of consecutive naturals, for example, 10286670 + ... + 10286681.

It is an arithmetic number, because the mean of its divisors is an integer number (30860028).

Almost surely, 2^123440106 is an apocalyptic number.

123440106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123440106 is a wasteful number, since it uses less digits than its factorization.

123440106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20573356.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 123440106 is about 11110.3603001883. The cubic root of 123440106 is about 497.9114292251.

Adding to 123440106 its reverse (601044321), we get a palindrome (724484427).

The spelling of 123440106 in words is "one hundred twenty-three million, four hundred forty thousand, one hundred six".