203040043 has 4 divisors (see below), whose sum is σ = 203159608. Its totient is φ = 202920480.

The previous prime is 203040041. The next prime is 203040059. The reversal of 203040043 is 340040302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203040043 - 2¹ = 203040041 is a prime.

It is a super-2 number, since 2×203040043² = 82450518122883698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203039999 and 203040026.

It is not an unprimeable number, because it can be changed into a prime (203040041) 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, 57198 + ... + 60643.

It is an arithmetic number, because the mean of its divisors is an integer number (50789902).

Almost surely, 2^203040043 is an apocalyptic number.

203040043 is a deficient number, since it is larger than the sum of its proper divisors (119565).

203040043 is a wasteful number, since it uses less digits than its factorization.

203040043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119564.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 203040043 is about 14249.2120133009. The cubic root of 203040043 is about 587.7517067209.

Adding to 203040043 its reverse (340040302), we get a palindrome (543080345).

The spelling of 203040043 in words is "two hundred three million, forty thousand, forty-three".