421143244 has 24 divisors (see below), whose sum is σ = 781824960. Its totient is φ = 197811456.

The previous prime is 421143241. The next prime is 421143253. The reversal of 421143244 is 442341124.

It is not an unprimeable number, because it can be changed into a prime (421143241) 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, 32317 + ... + 43435.

It is an arithmetic number, because the mean of its divisors is an integer number (32576040).

Almost surely, 2^421143244 is an apocalyptic number.

It is an amenable number.

421143244 is a deficient number, since it is larger than the sum of its proper divisors (360681716).

421143244 is a wasteful number, since it uses less digits than its factorization.

421143244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11697 (or 11695 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 421143244 is about 20521.7748745083. The cubic root of 421143244 is about 749.5661158560.

Adding to 421143244 its reverse (442341124), we get a palindrome (863484368).

The spelling of 421143244 in words is "four hundred twenty-one million, one hundred forty-three thousand, two hundred forty-four".