208140147 has 6 divisors (see below), whose sum is σ = 300646892. Its totient is φ = 138760092.

The previous prime is 208140137. The next prime is 208140151. The reversal of 208140147 is 741041802.

It is not a de Polignac number, because 208140147 - 2⁴ = 208140131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208140147.

It is not an unprimeable number, because it can be changed into a prime (208140137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11563333 + ... + 11563350.

Almost surely, 2^208140147 is an apocalyptic number.

208140147 is a deficient number, since it is larger than the sum of its proper divisors (92506745).

208140147 is a wasteful number, since it uses less digits than its factorization.

208140147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23126689 (or 23126686 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 208140147 is about 14427.0630067245. The cubic root of 208140147 is about 592.6322559004.

Adding to 208140147 its reverse (741041802), we get a palindrome (949181949).

The spelling of 208140147 in words is "two hundred eight million, one hundred forty thousand, one hundred forty-seven".