10203421 has 8 divisors (see below), whose sum is σ = 10692864. Its totient is φ = 9717840.

The previous prime is 10203397. The next prime is 10203443. The reversal of 10203421 is 12430201.

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

It is a cyclic number.

It is not a de Polignac number, because 10203421 - 2⁷ = 10203293 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 (10203461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5415 + ... + 7051.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^10203421 is an apocalyptic number.

It is an amenable number.

10203421 is a deficient number, since it is larger than the sum of its proper divisors (489443).

10203421 is a wasteful number, since it uses less digits than its factorization.

10203421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 10203421 is about 3194.2794179595. The cubic root of 10203421 is about 216.8945313462.

Adding to 10203421 its reverse (12430201), we get a palindrome (22633622).

The spelling of 10203421 in words is "ten million, two hundred three thousand, four hundred twenty-one".