122440455405 has 48 divisors (see below), whose sum is σ = 223528206720. Its totient is φ = 61829184384.

The previous prime is 122440455383. The next prime is 122440455407. The reversal of 122440455405 is 504554044221.

122440455405 is a `hidden beast` number, since 1 + 2 + 244 + 0 + 4 + 5 + 5 + 405 = 666.

It is not a de Polignac number, because 122440455405 - 2²⁰ = 122439406829 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122440455405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122440455407) 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, 1484307 + ... + 1564623.

It is an arithmetic number, because the mean of its divisors is an integer number (4656837640).

Almost surely, 2^122440455405 is an apocalyptic number.

122440455405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122440455405 is a deficient number, since it is larger than the sum of its proper divisors (101087751315).

122440455405 is a wasteful number, since it uses less digits than its factorization.

122440455405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82130 (or 82127 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 122440455405 its reverse (504554044221), we get a palindrome (626994499626).

The spelling of 122440455405 in words is "one hundred twenty-two billion, four hundred forty million, four hundred fifty-five thousand, four hundred five".