208942129 has 8 divisors (see below), whose sum is σ = 235797120. Its totient is φ = 183397200.

The previous prime is 208942127. The next prime is 208942157. The reversal of 208942129 is 921249802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 208942129 - 2¹ = 208942127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208942127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327177 + ... + 327814.

It is an arithmetic number, because the mean of its divisors is an integer number (29474640).

Almost surely, 2^208942129 is an apocalyptic number.

208942129 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

208942129 is a deficient number, since it is larger than the sum of its proper divisors (26854991).

208942129 is a wasteful number, since it uses less digits than its factorization.

208942129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655031.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 208942129 is about 14454.8306458429. The cubic root of 208942129 is about 593.3924348469.

The spelling of 208942129 in words is "two hundred eight million, nine hundred forty-two thousand, one hundred twenty-nine".