9200203421 has 4 divisors (see below), whose sum is σ = 9202732512. Its totient is φ = 9197674332.

The previous prime is 9200203399. The next prime is 9200203457. The reversal of 9200203421 is 1243020029.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9200203421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9200203471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259081 + ... + 1266366.

It is an arithmetic number, because the mean of its divisors is an integer number (2300683128).

Almost surely, 2^9200203421 is an apocalyptic number.

It is an amenable number.

9200203421 is a deficient number, since it is larger than the sum of its proper divisors (2529091).

9200203421 is a wasteful number, since it uses less digits than its factorization.

9200203421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529090.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 9200203421 is about 95917.6908656584. The cubic root of 9200203421 is about 2095.3945498568.

The spelling of 9200203421 in words is "nine billion, two hundred million, two hundred three thousand, four hundred twenty-one".