421402222 has 16 divisors (see below), whose sum is σ = 671200992. Its totient is φ = 197739520.

The previous prime is 421402217. The next prime is 421402231. The reversal of 421402222 is 222204124.

It is a self number, because there is not a number n which added to its sum of digits gives 421402222.

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, 5554 + ... + 29557.

It is an arithmetic number, because the mean of its divisors is an integer number (41950062).

Almost surely, 2^421402222 is an apocalyptic number.

421402222 is a deficient number, since it is larger than the sum of its proper divisors (249798770).

421402222 is a wasteful number, since it uses less digits than its factorization.

421402222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35483.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 421402222 is about 20528.0837391121. The cubic root of 421402222 is about 749.7197305377.

Adding to 421402222 its reverse (222204124), we get a palindrome (643606346).

The spelling of 421402222 in words is "four hundred twenty-one million, four hundred two thousand, two hundred twenty-two".