208093642 has 4 divisors (see below), whose sum is σ = 312140466. Its totient is φ = 104046820.

The previous prime is 208093637. The next prime is 208093723. The reversal of 208093642 is 246390802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 188210961 + 19882681 = 13719^2 + 4459^2 .

It is a junction number, because it is equal to n+sod(n) for n = 208093598 and 208093607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52023409 + ... + 52023412.

Almost surely, 2^208093642 is an apocalyptic number.

208093642 is a deficient number, since it is larger than the sum of its proper divisors (104046824).

208093642 is a wasteful number, since it uses less digits than its factorization.

208093642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104046823.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 208093642 is about 14425.4511887844. The cubic root of 208093642 is about 592.5881151034.

The spelling of 208093642 in words is "two hundred eight million, ninety-three thousand, six hundred forty-two".