421145241125444 has 96 divisors (see below), whose sum is σ = 840056744411136. Its totient is φ = 182867661694080.

The previous prime is 421145241125407. The next prime is 421145241125447. The reversal of 421145241125444 is 444521142541124.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 421145241125395 and 421145241125404.

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

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3008819549 + ... + 3008959515.

It is an arithmetic number, because the mean of its divisors is an integer number (8750591087616).

Almost surely, 2^{421145241125444} is an apocalyptic number.

421145241125444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421145241125444 is a deficient number, since it is larger than the sum of its proper divisors (418911503285692).

421145241125444 is a wasteful number, since it uses less digits than its factorization.

421145241125444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143865 (or 143863 counting only the distinct ones).

The product of its digits is 819200, while the sum is 44.

Adding to 421145241125444 its reverse (444521142541124), we get a palindrome (865666383666568).

The spelling of 421145241125444 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-four".