123404422 has 8 divisors (see below), whose sum is σ = 189045216. Its totient is φ = 60389352.

The previous prime is 123404389. The next prime is 123404429. The reversal of 123404422 is 224404321.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 123404393 and 123404402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123404429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656313 + ... + 656500.

It is an arithmetic number, because the mean of its divisors is an integer number (23630652).

Almost surely, 2^123404422 is an apocalyptic number.

123404422 is a deficient number, since it is larger than the sum of its proper divisors (65640794).

123404422 is a wasteful number, since it uses less digits than its factorization.

123404422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312862.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 123404422 is about 11108.7542955995. The cubic root of 123404422 is about 497.8634459443.

Adding to 123404422 its reverse (224404321), we get a palindrome (347808743).

The spelling of 123404422 in words is "one hundred twenty-three million, four hundred four thousand, four hundred twenty-two".