421145241125443 has 8 divisors (see below), whose sum is σ = 421224907948416. Its totient is φ = 421065575784000.

The previous prime is 421145241125407. The next prime is 421145241125447. The reversal of 421145241125443 is 344521142541124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421145241125443 is a prime.

It is a super-3 number, since 3×421145241125443³ (a number of 45 digits) contains 333 as substring.

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 421145241125443.

It is not an unprimeable number, because it can be changed into a prime (421145241125447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688243903 + ... + 688855543.

It is an arithmetic number, because the mean of its divisors is an integer number (52653113493552).

Almost surely, 2^{421145241125443} is an apocalyptic number.

421145241125443 is a deficient number, since it is larger than the sum of its proper divisors (79666822973).

421145241125443 is a wasteful number, since it uses less digits than its factorization.

421145241125443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740765.

The product of its digits is 614400, while the sum is 43.

Adding to 421145241125443 its reverse (344521142541124), we get a palindrome (765666383666567).

The spelling of 421145241125443 in words is "four hundred twenty-one trillion, one hundred forty-five billion, two hundred forty-one million, one hundred twenty-five thousand, four hundred forty-three".