421043306 has 16 divisors (see below), whose sum is σ = 669276000. Its totient is φ = 198100368.

The previous prime is 421043303. The next prime is 421043317. The reversal of 421043306 is 603340124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (421043303) 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 7 ways as a sum of consecutive naturals, for example, 31520 + ... + 42843.

It is an arithmetic number, because the mean of its divisors is an integer number (41829750).

Almost surely, 2^421043306 is an apocalyptic number.

421043306 is a deficient number, since it is larger than the sum of its proper divisors (248232694).

421043306 is a wasteful number, since it uses less digits than its factorization.

421043306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74533.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 421043306 is about 20519.3398041945. The cubic root of 421043306 is about 749.5068200654.

The spelling of 421043306 in words is "four hundred twenty-one million, forty-three thousand, three hundred six".