203140043 has 4 divisors (see below), whose sum is σ = 206972928. Its totient is φ = 199307160.

The previous prime is 203140033. The next prime is 203140051. The reversal of 203140043 is 340041302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340041302 = 2 ⋅170020651.

It is a cyclic number.

It is not a de Polignac number, because 203140043 - 2¹⁰ = 203139019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203140033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1916363 + ... + 1916468.

It is an arithmetic number, because the mean of its divisors is an integer number (51743232).

Almost surely, 2^203140043 is an apocalyptic number.

203140043 is a deficient number, since it is larger than the sum of its proper divisors (3832885).

203140043 is an equidigital number, since it uses as much as digits as its factorization.

203140043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832884.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 203140043 is about 14252.7205473201. The cubic root of 203140043 is about 587.8481828039.

Adding to 203140043 its reverse (340041302), we get a palindrome (543181345).

The spelling of 203140043 in words is "two hundred three million, one hundred forty thousand, forty-three".