10421503 has 8 divisors (see below), whose sum is σ = 10750320. Its totient is φ = 10096320.

The previous prime is 10421491. The next prime is 10421513. The reversal of 10421503 is 30512401.

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 10421503 - 2⁵ = 10421471 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 (10421513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5628 + ... + 7246.

It is an arithmetic number, because the mean of its divisors is an integer number (1343790).

Almost surely, 2^10421503 is an apocalyptic number.

10421503 is a deficient number, since it is larger than the sum of its proper divisors (328817).

10421503 is a wasteful number, since it uses less digits than its factorization.

10421503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 10421503 is about 3228.2352764320. The cubic root of 10421503 is about 218.4289103651.

Adding to 10421503 its reverse (30512401), we get a palindrome (40933904).

The spelling of 10421503 in words is "ten million, four hundred twenty-one thousand, five hundred three".