421255214441 has 16 divisors (see below), whose sum is σ = 432436838400. Its totient is φ = 410169403728.

The previous prime is 421255214411. The next prime is 421255214489. The reversal of 421255214441 is 144412552124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 421255214441 - 2²⁶ = 421188105577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421255214411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11923040 + ... + 11958318.

It is an arithmetic number, because the mean of its divisors is an integer number (27027302400).

Almost surely, 2^421255214441 is an apocalyptic number.

It is an amenable number.

421255214441 is a deficient number, since it is larger than the sum of its proper divisors (11181623959).

421255214441 is a wasteful number, since it uses less digits than its factorization.

421255214441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36628.

The product of its digits is 51200, while the sum is 35.

Adding to 421255214441 its reverse (144412552124), we get a palindrome (565667766565).

The spelling of 421255214441 in words is "four hundred twenty-one billion, two hundred fifty-five million, two hundred fourteen thousand, four hundred forty-one".