208542103 has 32 divisors (see below), whose sum is σ = 273553920. Its totient is φ = 154224000.

The previous prime is 208542071. The next prime is 208542133. The reversal of 208542103 is 301245802.

It is not a de Polignac number, because 208542103 - 2⁵ = 208542071 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 (208542133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135448 + ... + 136978.

It is an arithmetic number, because the mean of its divisors is an integer number (8548560).

Almost surely, 2^208542103 is an apocalyptic number.

208542103 is a deficient number, since it is larger than the sum of its proper divisors (65011817).

208542103 is a wasteful number, since it uses less digits than its factorization.

208542103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 208542103 is about 14440.9869122578. The cubic root of 208542103 is about 593.0135036884.

Adding to 208542103 its reverse (301245802), we get a palindrome (509787905).

The spelling of 208542103 in words is "two hundred eight million, five hundred forty-two thousand, one hundred three".