222420405 has 8 divisors (see below), whose sum is σ = 355872672. Its totient is φ = 118624208.

The previous prime is 222420397. The next prime is 222420421. The reversal of 222420405 is 504024222.

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

It is a cyclic number.

It is not a de Polignac number, because 222420405 - 2³ = 222420397 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7413999 + ... + 7414028.

It is an arithmetic number, because the mean of its divisors is an integer number (44484084).

Almost surely, 2^222420405 is an apocalyptic number.

It is an amenable number.

222420405 is a deficient number, since it is larger than the sum of its proper divisors (133452267).

222420405 is a wasteful number, since it uses less digits than its factorization.

222420405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14828035.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 222420405 is about 14913.7656210630. The cubic root of 222420405 is about 605.8868717797.

Adding to 222420405 its reverse (504024222), we get a palindrome (726444627).

The spelling of 222420405 in words is "two hundred twenty-two million, four hundred twenty thousand, four hundred five".