203042111 has 4 divisors (see below), whose sum is σ = 203079672. Its totient is φ = 203004552.

The previous prime is 203042071. The next prime is 203042117. The reversal of 203042111 is 111240302.

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 203042111 - 2²² = 198847807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203042117) 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, 8960 + ... + 22053.

It is an arithmetic number, because the mean of its divisors is an integer number (50769918).

Almost surely, 2^203042111 is an apocalyptic number.

203042111 is a deficient number, since it is larger than the sum of its proper divisors (37561).

203042111 is an equidigital number, since it uses as much as digits as its factorization.

203042111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37560.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 203042111 is about 14249.2845785324. The cubic root of 203042111 is about 587.7537021670.

Adding to 203042111 its reverse (111240302), we get a palindrome (314282413).

The spelling of 203042111 in words is "two hundred three million, forty-two thousand, one hundred eleven".