123134404422 has 32 divisors (see below), whose sum is σ = 255772615680. Its totient is φ = 39477080160.

The previous prime is 123134404343. The next prime is 123134404429. The reversal of 123134404422 is 224404431321.

It is a self number, because there is not a number n which added to its sum of digits gives 123134404422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123134404429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2000397 + ... + 2061032.

It is an arithmetic number, because the mean of its divisors is an integer number (7992894240).

Almost surely, 2^123134404422 is an apocalyptic number.

123134404422 is an abundant number, since it is smaller than the sum of its proper divisors (132638211258).

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

123134404422 is a wasteful number, since it uses less digits than its factorization.

123134404422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061628.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 123134404422 its reverse (224404431321), we get a palindrome (347538835743).

The spelling of 123134404422 in words is "one hundred twenty-three billion, one hundred thirty-four million, four hundred four thousand, four hundred twenty-two".