43420144 has 20 divisors (see below), whose sum is σ = 85715496. Its totient is φ = 21300032.

The previous prime is 43420133. The next prime is 43420199. The reversal of 43420144 is 44102434.

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, 24754 + ... + 26449.

Almost surely, 2^43420144 is an apocalyptic number.

It is an amenable number.

43420144 is a deficient number, since it is larger than the sum of its proper divisors (42295352).

43420144 is a wasteful number, since it uses less digits than its factorization.

43420144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51264 (or 51258 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 43420144 is about 6589.3963304691. The cubic root of 43420144 is about 351.4771421242.

Adding to 43420144 its reverse (44102434), we get a palindrome (87522578).

The spelling of 43420144 in words is "forty-three million, four hundred twenty thousand, one hundred forty-four".