421022441 has 4 divisors (see below), whose sum is σ = 481168512. Its totient is φ = 360876372.

The previous prime is 421022431. The next prime is 421022447. The reversal of 421022441 is 144220124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421022441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421022447) 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, 30073025 + ... + 30073038.

It is an arithmetic number, because the mean of its divisors is an integer number (120292128).

Almost surely, 2^421022441 is an apocalyptic number.

It is an amenable number.

421022441 is a deficient number, since it is larger than the sum of its proper divisors (60146071).

421022441 is an equidigital number, since it uses as much as digits as its factorization.

421022441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60146070.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 421022441 is about 20518.8313751052. The cubic root of 421022441 is about 749.4944391394.

Adding to 421022441 its reverse (144220124), we get a palindrome (565242565).

The spelling of 421022441 in words is "four hundred twenty-one million, twenty-two thousand, four hundred forty-one".