43240215 has 16 divisors (see below), whose sum is σ = 70358400. Its totient is φ = 22670112.

The previous prime is 43240213. The next prime is 43240229. The reversal of 43240215 is 51204234.

It is not a de Polignac number, because 43240215 - 2¹ = 43240213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43240191 and 43240200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43240213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23545 + ... + 25314.

It is an arithmetic number, because the mean of its divisors is an integer number (4397400).

Almost surely, 2^43240215 is an apocalyptic number.

43240215 is a deficient number, since it is larger than the sum of its proper divisors (27118185).

43240215 is a wasteful number, since it uses less digits than its factorization.

43240215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48926.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 43240215 is about 6575.7292371265. The cubic root of 43240215 is about 350.9909738671.

Adding to 43240215 its reverse (51204234), we get a palindrome (94444449).

The spelling of 43240215 in words is "forty-three million, two hundred forty thousand, two hundred fifteen".