420321430 has 32 divisors (see below), whose sum is σ = 803385216. Its totient is φ = 157784064.

The previous prime is 420321397. The next prime is 420321437. The reversal of 420321430 is 34123024.

It is a junction number, because it is equal to n+sod(n) for n = 420321398 and 420321407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420321437) 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, 59022 + ... + 65758.

It is an arithmetic number, because the mean of its divisors is an integer number (25105788).

Almost surely, 2^420321430 is an apocalyptic number.

420321430 is a deficient number, since it is larger than the sum of its proper divisors (383063786).

420321430 is a wasteful number, since it uses less digits than its factorization.

420321430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 420321430 is about 20501.7421210979. The cubic root of 420321430 is about 749.0782335188.

Adding to 420321430 its reverse (34123024), we get a palindrome (454444454).

The spelling of 420321430 in words is "four hundred twenty million, three hundred twenty-one thousand, four hundred thirty".