421116043 has 4 divisors (see below), whose sum is σ = 431387208. Its totient is φ = 410844880.

The previous prime is 421116041. The next prime is 421116053. The reversal of 421116043 is 340611124.

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

It is a cyclic number.

It is not a de Polignac number, because 421116043 - 2¹ = 421116041 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421116041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5135521 + ... + 5135602.

It is an arithmetic number, because the mean of its divisors is an integer number (107846802).

Almost surely, 2^421116043 is an apocalyptic number.

421116043 is a deficient number, since it is larger than the sum of its proper divisors (10271165).

421116043 is a wasteful number, since it uses less digits than its factorization.

421116043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10271164.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 421116043 is about 20521.1121287322. The cubic root of 421116043 is about 749.5499777310.

Adding to 421116043 its reverse (340611124), we get a palindrome (761727167).

The spelling of 421116043 in words is "four hundred twenty-one million, one hundred sixteen thousand, forty-three".