201440043 has 12 divisors (see below), whose sum is σ = 332536048. Its totient is φ = 115108560.

The previous prime is 201440023. The next prime is 201440047. The reversal of 201440043 is 340044102.

It is not a de Polignac number, because 201440043 - 2⁹ = 201439531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201439998 and 201440025.

It is not an unprimeable number, because it can be changed into a prime (201440047) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1598668 + ... + 1598793.

Almost surely, 2^201440043 is an apocalyptic number.

201440043 is a deficient number, since it is larger than the sum of its proper divisors (131096005).

201440043 is a wasteful number, since it uses less digits than its factorization.

201440043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197474 (or 3197471 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 201440043 is about 14192.9575142040. The cubic root of 201440043 is about 586.2037628090.

Adding to 201440043 its reverse (340044102), we get a palindrome (541484145).

The spelling of 201440043 in words is "two hundred one million, four hundred forty thousand, forty-three".