123440430201 has 32 divisors (see below), whose sum is σ = 180116172288. Its totient is φ = 74576701440.

The previous prime is 123440430173. The next prime is 123440430229. The reversal of 123440430201 is 102034044321.

It is an interprime number because it is at equal distance from previous prime (123440430173) and next prime (123440430229).

It is not a de Polignac number, because 123440430201 - 2⁶ = 123440430137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123440430101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17765410 + ... + 17772356.

It is an arithmetic number, because the mean of its divisors is an integer number (5628630384).

Almost surely, 2^123440430201 is an apocalyptic number.

123440430201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123440430201 is a deficient number, since it is larger than the sum of its proper divisors (56675742087).

123440430201 is a wasteful number, since it uses less digits than its factorization.

123440430201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 123440430201 its reverse (102034044321), we get a palindrome (225474474522).

The spelling of 123440430201 in words is "one hundred twenty-three billion, four hundred forty million, four hundred thirty thousand, two hundred one".