420143344 has 20 divisors (see below), whose sum is σ = 823837896. Its totient is φ = 207540032.

The previous prime is 420143303. The next prime is 420143363. The reversal of 420143344 is 443341024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156859 + ... + 159514.

Almost surely, 2^420143344 is an apocalyptic number.

It is an amenable number.

420143344 is a deficient number, since it is larger than the sum of its proper divisors (403694552).

420143344 is a wasteful number, since it uses less digits than its factorization.

420143344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316464 (or 316458 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 420143344 is about 20497.3984690741. The cubic root of 420143344 is about 748.9724262474.

Adding to 420143344 its reverse (443341024), we get a palindrome (863484368).

The spelling of 420143344 in words is "four hundred twenty million, one hundred forty-three thousand, three hundred forty-four".