208121426 has 8 divisors (see below), whose sum is σ = 312657840. Its totient is φ = 103902148.

The previous prime is 208121413. The next prime is 208121449. The reversal of 208121426 is 624121802.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 208121395 and 208121404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77636 + ... + 80271.

It is an arithmetic number, because the mean of its divisors is an integer number (39082230).

Almost surely, 2^208121426 is an apocalyptic number.

208121426 is a deficient number, since it is larger than the sum of its proper divisors (104536414).

208121426 is a wasteful number, since it uses less digits than its factorization.

208121426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158568.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 208121426 is about 14426.4141767800. The cubic root of 208121426 is about 592.6144874220.

The spelling of 208121426 in words is "two hundred eight million, one hundred twenty-one thousand, four hundred twenty-six".