404422123 has 4 divisors (see below), whose sum is σ = 462196720. Its totient is φ = 346647528.

The previous prime is 404422121. The next prime is 404422127. The reversal of 404422123 is 321224404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404422123 - 2¹ = 404422121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404422094 and 404422103.

It is not an unprimeable number, because it can be changed into a prime (404422121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28887288 + ... + 28887301.

It is an arithmetic number, because the mean of its divisors is an integer number (115549180).

Almost surely, 2^404422123 is an apocalyptic number.

404422123 is a deficient number, since it is larger than the sum of its proper divisors (57774597).

404422123 is an equidigital number, since it uses as much as digits as its factorization.

404422123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57774596.

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

The square root of 404422123 is about 20110.2492028319. The cubic root of 404422123 is about 739.5115616549.

Adding to 404422123 its reverse (321224404), we get a palindrome (725646527).

The spelling of 404422123 in words is "four hundred four million, four hundred twenty-two thousand, one hundred twenty-three".