421071303 has 4 divisors (see below), whose sum is σ = 561428408. Its totient is φ = 280714200.

The previous prime is 421071257. The next prime is 421071311. The reversal of 421071303 is 303170124.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 421071303 - 2²⁰ = 420022727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421071303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421071403) 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 3 ways as a sum of consecutive naturals, for example, 70178548 + ... + 70178553.

It is an arithmetic number, because the mean of its divisors is an integer number (140357102).

Almost surely, 2^421071303 is an apocalyptic number.

421071303 is a deficient number, since it is larger than the sum of its proper divisors (140357105).

421071303 is a wasteful number, since it uses less digits than its factorization.

421071303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140357104.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 421071303 is about 20520.0220029122. The cubic root of 421071303 is about 749.5234323530.

The spelling of 421071303 in words is "four hundred twenty-one million, seventy-one thousand, three hundred three".