422121 has 8 divisors (see below), whose sum is σ = 643264. Its totient is φ = 241200.

The previous prime is 422113. The next prime is 422129. The reversal of 422121 is 121224.

It is an interprime number because it is at equal distance from previous prime (422113) and next prime (422129).

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

It is not a de Polignac number, because 422121 - 2³ = 422113 is a prime.

It is a super-3 number, since 3×422121³ = 225648333087832683, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a Duffinian number.

422121 is a modest number, since divided by 2121 gives 42 as remainder.

It is a Curzon number.

422121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 422097 and 422106.

It is not an unprimeable number, because it can be changed into a prime (422129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10030 + ... + 10071.

It is an arithmetic number, because the mean of its divisors is an integer number (80408).

2⁴²²¹²¹ is an apocalyptic number.

It is an amenable number.

422121 is a deficient number, since it is larger than the sum of its proper divisors (221143).

422121 is a wasteful number, since it uses less digits than its factorization.

422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20111.

The product of its digits is 32, while the sum is 12.

The square root of 422121 is about 649.7083961286. The cubic root of 422121 is about 75.0145749452.

Adding to 422121 its reverse (121224), we get a palindrome (543345).

The spelling of 422121 in words is "four hundred twenty-two thousand, one hundred twenty-one", and thus it is an iban number.