421022630 has 32 divisors (see below), whose sum is σ = 889517376. Its totient is φ = 140448384.

The previous prime is 421022611. The next prime is 421022633. The reversal of 421022630 is 36220124.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421022633) 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 15 ways as a sum of consecutive naturals, for example, 78689 + ... + 83868.

It is an arithmetic number, because the mean of its divisors is an integer number (27797418).

Almost surely, 2^421022630 is an apocalyptic number.

421022630 is an abundant number, since it is smaller than the sum of its proper divisors (468494746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421022630 is a wasteful number, since it uses less digits than its factorization.

421022630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162608.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 421022630 is about 20518.8359806301. The cubic root of 421022630 is about 749.4945512905.

Adding to 421022630 its reverse (36220124), we get a palindrome (457242754).

The spelling of 421022630 in words is "four hundred twenty-one million, twenty-two thousand, six hundred thirty".