208106742 has 16 divisors (see below), whose sum is σ = 420891120. Its totient is φ = 68589312.

The previous prime is 208106729. The next prime is 208106803. The reversal of 208106742 is 247601802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194323 + ... + 195390.

It is an arithmetic number, because the mean of its divisors is an integer number (26305695).

Almost surely, 2^208106742 is an apocalyptic number.

208106742 is an abundant number, since it is smaller than the sum of its proper divisors (212784378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208106742 is a wasteful number, since it uses less digits than its factorization.

208106742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389807.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 208106742 is about 14425.9052402267. The cubic root of 208106742 is about 592.6005497960.

The spelling of 208106742 in words is "two hundred eight million, one hundred six thousand, seven hundred forty-two".