421204330241 has 4 divisors (see below), whose sum is σ = 421271589312. Its totient is φ = 421137071172.

The previous prime is 421204330201. The next prime is 421204330249. The reversal of 421204330241 is 142033402124.

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-421204330241 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 421204330241.

It is not an unprimeable number, because it can be changed into a prime (421204330249) 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, 33620141 + ... + 33632666.

It is an arithmetic number, because the mean of its divisors is an integer number (105317897328).

Almost surely, 2^421204330241 is an apocalyptic number.

It is an amenable number.

421204330241 is a deficient number, since it is larger than the sum of its proper divisors (67259071).

421204330241 is an equidigital number, since it uses as much as digits as its factorization.

421204330241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67259070.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 421204330241 its reverse (142033402124), we get a palindrome (563237732365).

The spelling of 421204330241 in words is "four hundred twenty-one billion, two hundred four million, three hundred thirty thousand, two hundred forty-one".