203420043 has 24 divisors (see below), whose sum is σ = 302695536. Its totient is φ = 131544000.

The previous prime is 203420039. The next prime is 203420053. The reversal of 203420043 is 340024302.

203420043 is a `hidden beast` number, since 203 + 420 + 0 + 43 = 666.

It is not a de Polignac number, because 203420043 - 2² = 203420039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203419998 and 203420025.

It is not an unprimeable number, because it can be changed into a prime (203420003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139468 + ... + 140918.

It is an arithmetic number, because the mean of its divisors is an integer number (12612314).

Almost surely, 2^203420043 is an apocalyptic number.

203420043 is a deficient number, since it is larger than the sum of its proper divisors (99275493).

203420043 is a wasteful number, since it uses less digits than its factorization.

203420043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1912 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 203420043 is about 14262.5398509522. The cubic root of 203420043 is about 588.1181475070.

Adding to 203420043 its reverse (340024302), we get a palindrome (543444345).

The spelling of 203420043 in words is "two hundred three million, four hundred twenty thousand, forty-three".