421343630 has 16 divisors (see below), whose sum is σ = 782884224. Its totient is φ = 163100640.

The previous prime is 421343609. The next prime is 421343651. The reversal of 421343630 is 36343124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421343609) and next prime (421343651).

It is a self number, because there is not a number n which added to its sum of digits gives 421343630.

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, 679277 + ... + 679896.

It is an arithmetic number, because the mean of its divisors is an integer number (48930264).

Almost surely, 2^421343630 is an apocalyptic number.

421343630 is a deficient number, since it is larger than the sum of its proper divisors (361540594).

421343630 is a wasteful number, since it uses less digits than its factorization.

421343630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359211.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 421343630 is about 20526.6565713952. The cubic root of 421343630 is about 749.6849817773.

Adding to 421343630 its reverse (36343124), we get a palindrome (457686754).

The spelling of 421343630 in words is "four hundred twenty-one million, three hundred forty-three thousand, six hundred thirty".