208042587 has 10 divisors (see below), whose sum is σ = 310779788. Its totient is φ = 138695004.

The previous prime is 208042559. The next prime is 208042589. The reversal of 208042587 is 785240802.

It is a happy number.

It is not a de Polignac number, because 208042587 - 2⁷ = 208042459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208042589) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1284133 + ... + 1284294.

Almost surely, 2^208042587 is an apocalyptic number.

208042587 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

208042587 is a deficient number, since it is larger than the sum of its proper divisors (102737201).

208042587 is an equidigital number, since it uses as much as digits as its factorization.

208042587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568439 (or 2568430 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 208042587 is about 14423.6814648688. The cubic root of 208042587 is about 592.5396480438.

The spelling of 208042587 in words is "two hundred eight million, forty-two thousand, five hundred eighty-seven".