211042103 has 4 divisors (see below), whose sum is σ = 211215888. Its totient is φ = 210868320.

The previous prime is 211042057. The next prime is 211042121. The reversal of 211042103 is 301240112.

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 211042103 - 2¹⁰ = 211041079 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 (211042133) 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, 85058 + ... + 87503.

It is an arithmetic number, because the mean of its divisors is an integer number (52803972).

Almost surely, 2^211042103 is an apocalyptic number.

211042103 is a deficient number, since it is larger than the sum of its proper divisors (173785).

211042103 is a wasteful number, since it uses less digits than its factorization.

211042103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173784.

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

The square root of 211042103 is about 14527.2882190724. The cubic root of 211042103 is about 595.3737763977.

Adding to 211042103 its reverse (301240112), we get a palindrome (512282215).

The spelling of 211042103 in words is "two hundred eleven million, forty-two thousand, one hundred three".