421430530 has 16 divisors (see below), whose sum is σ = 776217024. Its totient is φ = 164651760.

The previous prime is 421430519. The next prime is 421430531. The reversal of 421430530 is 35034124.

It is not an unprimeable number, because it can be changed into a prime (421430531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489606 + ... + 490465.

It is an arithmetic number, because the mean of its divisors is an integer number (48513564).

Almost surely, 2^421430530 is an apocalyptic number.

421430530 is a deficient number, since it is larger than the sum of its proper divisors (354786494).

421430530 is a wasteful number, since it uses less digits than its factorization.

421430530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980121.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 421430530 is about 20528.7732219926. The cubic root of 421430530 is about 749.7365178174.

Adding to 421430530 its reverse (35034124), we get a palindrome (456464654).

The spelling of 421430530 in words is "four hundred twenty-one million, four hundred thirty thousand, five hundred thirty".