421344441305 has 16 divisors (see below), whose sum is σ = 527672759040. Its totient is φ = 322373502528.

The previous prime is 421344441289. The next prime is 421344441317. The reversal of 421344441305 is 503144443124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 421344441305 - 2⁴ = 421344441289 is a prime.

It is a super-2 number, since 2×421344441305² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545276 + ... + 1067714.

It is an arithmetic number, because the mean of its divisors is an integer number (32979547440).

Almost surely, 2^421344441305 is an apocalyptic number.

It is an amenable number.

421344441305 is a deficient number, since it is larger than the sum of its proper divisors (106328317735).

421344441305 is a wasteful number, since it uses less digits than its factorization.

421344441305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529480.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 421344441305 its reverse (503144443124), we get a palindrome (924488884429).

The spelling of 421344441305 in words is "four hundred twenty-one billion, three hundred forty-four million, four hundred forty-one thousand, three hundred five".