43140441 has 16 divisors (see below), whose sum is σ = 61133184. Its totient is φ = 26966784.

The previous prime is 43140421. The next prime is 43140443. The reversal of 43140441 is 14404134.

43140441 = 1585² + 1586² + ... + 1601².

It is not a de Polignac number, because 43140441 - 2¹⁹ = 42616153 is a prime.

It is a super-2 number, since 2×43140441² = 3722195299348962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43140443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13500 + ... + 16386.

It is an arithmetic number, because the mean of its divisors is an integer number (3820824).

Almost surely, 2^43140441 is an apocalyptic number.

It is an amenable number.

43140441 is a deficient number, since it is larger than the sum of its proper divisors (17992743).

43140441 is a wasteful number, since it uses less digits than its factorization.

43140441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 43140441 is about 6568.1383207116. The cubic root of 43140441 is about 350.7208029680.

Adding to 43140441 its reverse (14404134), we get a palindrome (57544575).

The spelling of 43140441 in words is "forty-three million, one hundred forty thousand, four hundred forty-one".