203902 has 8 divisors (see below), whose sum is σ = 307800. Its totient is φ = 101304.

The previous prime is 203897. The next prime is 203909. The reversal of 203902 is 209302.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203909) by changing a digit.

203902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349 + ... + 727.

It is an arithmetic number, because the mean of its divisors is an integer number (38475).

2²⁰³⁹⁰² is an apocalyptic number.

203902 is a deficient number, since it is larger than the sum of its proper divisors (103898).

203902 is a wasteful number, since it uses less digits than its factorization.

203902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 203902 is about 451.5550907697. Note that the first 3 decimals coincide. The cubic root of 203902 is about 58.8582251393.

The spelling of 203902 in words is "two hundred three thousand, nine hundred two".