202003421 has 16 divisors (see below), whose sum is σ = 215779200. Its totient is φ = 188568000.

The previous prime is 202003393. The next prime is 202003429. The reversal of 202003421 is 124300202.

202003421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202003421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202003396 and 202003405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202003429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519095 + ... + 519483.

It is an arithmetic number, because the mean of its divisors is an integer number (13486200).

Almost surely, 2^202003421 is an apocalyptic number.

It is an amenable number.

202003421 is a deficient number, since it is larger than the sum of its proper divisors (13775779).

202003421 is a wasteful number, since it uses less digits than its factorization.

202003421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 202003421 is about 14212.7907534024. The cubic root of 202003421 is about 586.7497431350.

Adding to 202003421 its reverse (124300202), we get a palindrome (326303623).

The spelling of 202003421 in words is "two hundred two million, three thousand, four hundred twenty-one".