203421872 has 10 divisors (see below), whose sum is σ = 394129908. Its totient is φ = 101710928.

The previous prime is 203421853. The next prime is 203421929. The reversal of 203421872 is 278124302.

203421872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6356918 + ... + 6356949.

Almost surely, 2^203421872 is an apocalyptic number.

It is an amenable number.

203421872 is a deficient number, since it is larger than the sum of its proper divisors (190708036).

203421872 is a wasteful number, since it uses less digits than its factorization.

203421872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12713875 (or 12713869 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 203421872 is about 14262.6039698226. The cubic root of 203421872 is about 588.1199101404.

The spelling of 203421872 in words is "two hundred three million, four hundred twenty-one thousand, eight hundred seventy-two".