422404121 has 4 divisors (see below), whose sum is σ = 422450100. Its totient is φ = 422358144.

The previous prime is 422404091. The next prime is 422404127. The reversal of 422404121 is 121404224.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 27825625 + 394578496 = 5275^2 + 19864^2 .

It is a cyclic number.

It is not a de Polignac number, because 422404121 - 2¹⁴ = 422387737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 422404093 and 422404102.

It is not an unprimeable number, because it can be changed into a prime (422404127) 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, 3956 + ... + 29333.

It is an arithmetic number, because the mean of its divisors is an integer number (105612525).

Almost surely, 2^422404121 is an apocalyptic number.

It is an amenable number.

422404121 is a deficient number, since it is larger than the sum of its proper divisors (45979).

422404121 is a wasteful number, since it uses less digits than its factorization.

422404121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45978.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 422404121 is about 20552.4723816868. The cubic root of 422404121 is about 750.3134221890.

Adding to 422404121 its reverse (121404224), we get a palindrome (543808345).

The spelling of 422404121 in words is "four hundred twenty-two million, four hundred four thousand, one hundred twenty-one".