43243240 has 64 divisors (see below), whose sum is σ = 108475200. Its totient is φ = 15418368.

The previous prime is 43243219. The next prime is 43243261. The reversal of 43243240 is 4234234.

It is an interprime number because it is at equal distance from previous prime (43243219) and next prime (43243261).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11247 + ... + 14593.

It is an arithmetic number, because the mean of its divisors is an integer number (1694925).

Almost surely, 2^43243240 is an apocalyptic number.

43243240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43243240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54237600).

43243240 is an abundant number, since it is smaller than the sum of its proper divisors (65231960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43243240 is a wasteful number, since it uses less digits than its factorization.

43243240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394 (or 3390 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 43243240 is about 6575.9592456158. The cubic root of 43243240 is about 350.9991585546. Note that the first 3 decimals are identical.

Adding to 43243240 its reverse (4234234), we get a palindrome (47477474).

The spelling of 43243240 in words is "forty-three million, two hundred forty-three thousand, two hundred forty".