422401121 has 8 divisors (see below), whose sum is σ = 425659584. Its totient is φ = 419150160.

The previous prime is 422401099. The next prime is 422401129. The reversal of 422401121 is 121104224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422401121 is a prime.

It is a Duffinian number.

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 422401121.

It is not an unprimeable number, because it can be changed into a prime (422401129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165626 + ... + 168156.

It is an arithmetic number, because the mean of its divisors is an integer number (53207448).

Almost surely, 2^422401121 is an apocalyptic number.

It is an amenable number.

422401121 is a deficient number, since it is larger than the sum of its proper divisors (3258463).

422401121 is a wasteful number, since it uses less digits than its factorization.

422401121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 422401121 is about 20552.3993976373. The cubic root of 422401121 is about 750.3116458919.

Adding to 422401121 its reverse (121104224), we get a palindrome (543505345).

The spelling of 422401121 in words is "four hundred twenty-two million, four hundred one thousand, one hundred twenty-one".