421230434 has 16 divisors (see below), whose sum is σ = 636879672. Its totient is φ = 208942848.

The previous prime is 421230427. The next prime is 421230443. The reversal of 421230434 is 434032124.

It can be written as a sum of positive squares in 4 ways, for example, as 418079809 + 3150625 = 20447^2 + 1775^2 .

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, 204152 + ... + 206204.

Almost surely, 2^421230434 is an apocalyptic number.

421230434 is a deficient number, since it is larger than the sum of its proper divisors (215649238).

421230434 is a wasteful number, since it uses less digits than its factorization.

421230434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 421230434 is about 20523.8990934959. The cubic root of 421230434 is about 749.6178402680.

Adding to 421230434 its reverse (434032124), we get a palindrome (855262558).

The spelling of 421230434 in words is "four hundred twenty-one million, two hundred thirty thousand, four hundred thirty-four".