43024221 has 12 divisors (see below), whose sum is σ = 62202972. Its totient is φ = 28656576.

The previous prime is 43024213. The next prime is 43024273. The reversal of 43024221 is 12242034.

It can be written as a sum of positive squares in 2 ways, for example, as 16088121 + 26936100 = 4011^2 + 5190^2 .

It is not a de Polignac number, because 43024221 - 2³ = 43024213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43024194 and 43024203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43024321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18115 + ... + 20351.

It is an arithmetic number, because the mean of its divisors is an integer number (5183581).

Almost surely, 2^43024221 is an apocalyptic number.

It is an amenable number.

43024221 is a deficient number, since it is larger than the sum of its proper divisors (19178751).

43024221 is a wasteful number, since it uses less digits than its factorization.

43024221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380 (or 4377 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 43024221 is about 6559.2850982405. The cubic root of 43024221 is about 350.4055733851.

Adding to 43024221 its reverse (12242034), we get a palindrome (55266255).

The spelling of 43024221 in words is "forty-three million, twenty-four thousand, two hundred twenty-one".