1003423521 has 16 divisors (see below), whose sum is σ = 1420901568. Its totient is φ = 627686400.

The previous prime is 1003423513. The next prime is 1003423541. The reversal of 1003423521 is 1253243001.

It is not a de Polignac number, because 1003423521 - 2³ = 1003423513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1003423501) 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, 12840 + ... + 46601.

It is an arithmetic number, because the mean of its divisors is an integer number (88806348).

Almost surely, 2^1003423521 is an apocalyptic number.

It is an amenable number.

1003423521 is a deficient number, since it is larger than the sum of its proper divisors (417478047).

1003423521 is a wasteful number, since it uses less digits than its factorization.

1003423521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59792.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1003423521 is about 31676.8609713778. The cubic root of 1003423521 is about 1001.1398738606.

Adding to 1003423521 its reverse (1253243001), we get a palindrome (2256666522).

The spelling of 1003423521 in words is "one billion, three million, four hundred twenty-three thousand, five hundred twenty-one".