422621421 has 8 divisors (see below), whose sum is σ = 563590560. Its totient is φ = 281699952.

The previous prime is 422621413. The next prime is 422621453. The reversal of 422621421 is 124126224.

It is a happy number.

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

It is not a de Polignac number, because 422621421 - 2³ = 422621413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 422621391 and 422621400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422621401) 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, 26091 + ... + 39063.

It is an arithmetic number, because the mean of its divisors is an integer number (70448820).

Almost surely, 2^422621421 is an apocalyptic number.

It is an amenable number.

422621421 is a deficient number, since it is larger than the sum of its proper divisors (140969139).

422621421 is a wasteful number, since it uses less digits than its factorization.

422621421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23835.

The product of its digits is 1536, while the sum is 24.

The square root of 422621421 is about 20557.7581705788. The cubic root of 422621421 is about 750.4420629448.

Adding to 422621421 its reverse (124126224), we get a palindrome (546747645).

The spelling of 422621421 in words is "four hundred twenty-two million, six hundred twenty-one thousand, four hundred twenty-one".