10421504 has 18 divisors (see below), whose sum is σ = 20802810. Its totient is φ = 5210624.

The previous prime is 10421491. The next prime is 10421513. The reversal of 10421504 is 40512401.

It can be written as a sum of positive squares in only one way, i.e., 8111104 + 2310400 = 2848^2 + 1520^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20099 + ... + 20610.

Almost surely, 2^10421504 is an apocalyptic number.

It is an amenable number.

10421504 is a deficient number, since it is larger than the sum of its proper divisors (10381306).

10421504 is an frugal number, since it uses more digits than its factorization.

10421504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40725 (or 40711 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 10421504 is about 3228.2354313154. The cubic root of 10421504 is about 218.4289173516.

Adding to 10421504 its reverse (40512401), we get a palindrome (50933905).

The spelling of 10421504 in words is "ten million, four hundred twenty-one thousand, five hundred four".