421120443 has 16 divisors (see below), whose sum is σ = 569470976. Its totient is φ = 276786720.

The previous prime is 421120439. The next prime is 421120451. The reversal of 421120443 is 344021124.

It is not a de Polignac number, because 421120443 - 2² = 421120439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421120433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58713 + ... + 65493.

It is an arithmetic number, because the mean of its divisors is an integer number (35591936).

Almost surely, 2^421120443 is an apocalyptic number.

421120443 is a deficient number, since it is larger than the sum of its proper divisors (148350533).

421120443 is a wasteful number, since it uses less digits than its factorization.

421120443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421120443 is about 20521.2193351175. The cubic root of 421120443 is about 749.5525882612.

Adding to 421120443 its reverse (344021124), we get a palindrome (765141567).

The spelling of 421120443 in words is "four hundred twenty-one million, one hundred twenty thousand, four hundred forty-three".