421230394 has 16 divisors (see below), whose sum is σ = 703914120. Its totient is φ = 187709760.

The previous prime is 421230389. The next prime is 421230401. The reversal of 421230394 is 493032124.

It can be written as a sum of positive squares in 4 ways, for example, as 246647025 + 174583369 = 15705^2 + 13213^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278577 + ... + 280084.

Almost surely, 2^421230394 is an apocalyptic number.

421230394 is a deficient number, since it is larger than the sum of its proper divisors (282683726).

421230394 is a wasteful number, since it uses less digits than its factorization.

421230394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558705.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 421230394 is about 20523.8981190221. The cubic root of 421230394 is about 749.6178165401.

The spelling of 421230394 in words is "four hundred twenty-one million, two hundred thirty thousand, three hundred ninety-four".