43243400 has 24 divisors (see below), whose sum is σ = 100541370. Its totient is φ = 17297280.

The previous prime is 43243399. The next prime is 43243429. The reversal of 43243400 is 434234.

It is a happy number.

43243400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 38464804 + 4778596 = 6202^2 + 2186^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107909 + ... + 108308.

Almost surely, 2^43243400 is an apocalyptic number.

43243400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43243400 is an abundant number, since it is smaller than the sum of its proper divisors (57297970).

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

43243400 is a wasteful number, since it uses less digits than its factorization.

43243400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216233 (or 216224 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 43243400 is about 6575.9714111301. The cubic root of 43243400 is about 350.9995914531. Note that the first 3 decimals are identical.

Adding to 43243400 its reverse (434234), we get a palindrome (43677634).

The spelling of 43243400 in words is "forty-three million, two hundred forty-three thousand, four hundred".