43253240 has 16 divisors (see below), whose sum is σ = 97319880. Its totient is φ = 17301280.

The previous prime is 43253233. The next prime is 43253251. The reversal of 43253240 is 4235234.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540626 + ... + 540705.

Almost surely, 2^43253240 is an apocalyptic number.

43253240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43253240 is an abundant number, since it is smaller than the sum of its proper divisors (54066640).

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

43253240 is a wasteful number, since it uses less digits than its factorization.

43253240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081342 (or 1081338 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 43253240 is about 6576.7195470082. The cubic root of 43253240 is about 351.0262126565.

Adding to 43253240 its reverse (4235234), we get a palindrome (47488474).

The spelling of 43253240 in words is "forty-three million, two hundred fifty-three thousand, two hundred forty".