208042473 has 4 divisors (see below), whose sum is σ = 277389968. Its totient is φ = 138694980.

The previous prime is 208042469. The next prime is 208042477. The reversal of 208042473 is 374240802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (208042469) and next prime (208042477).

It is not a de Polignac number, because 208042473 - 2² = 208042469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 208042473.

It is not an unprimeable number, because it can be changed into a prime (208042477) 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, 34673743 + ... + 34673748.

It is an arithmetic number, because the mean of its divisors is an integer number (69347492).

Almost surely, 2^208042473 is an apocalyptic number.

It is an amenable number.

208042473 is a deficient number, since it is larger than the sum of its proper divisors (69347495).

208042473 is an equidigital number, since it uses as much as digits as its factorization.

208042473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69347494.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 208042473 is about 14423.6775130339. The cubic root of 208042473 is about 592.5395398135.

The spelling of 208042473 in words is "two hundred eight million, forty-two thousand, four hundred seventy-three".