43140205 has 8 divisors (see below), whose sum is σ = 51984504. Its totient is φ = 34368000.

The previous prime is 43140199. The next prime is 43140233. The reversal of 43140205 is 50204134.

It can be written as a sum of positive squares in 4 ways, for example, as 3374569 + 39765636 = 1837^2 + 6306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43140205 - 2¹³ = 43132013 is a prime.

It is a super-2 number, since 2×43140205² = 3722154574884050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16696 + ... + 19105.

It is an arithmetic number, because the mean of its divisors is an integer number (6498063).

Almost surely, 2^43140205 is an apocalyptic number.

It is an amenable number.

43140205 is a deficient number, since it is larger than the sum of its proper divisors (8844299).

43140205 is a wasteful number, since it uses less digits than its factorization.

43140205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36047.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 43140205 is about 6568.1203551701. The cubic root of 43140205 is about 350.7201634269.

Adding to 43140205 its reverse (50204134), we get a palindrome (93344339).

The spelling of 43140205 in words is "forty-three million, one hundred forty thousand, two hundred five".