1002530421 has 48 divisors (see below), whose sum is σ = 1580800000. Its totient is φ = 609910560.

The previous prime is 1002530387. The next prime is 1002530467. The reversal of 1002530421 is 1240352001.

It is not a de Polignac number, because 1002530421 - 2¹⁹ = 1002006133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002530394 and 1002530403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002530471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2008830 + ... + 2009328.

Almost surely, 2^1002530421 is an apocalyptic number.

It is an amenable number.

1002530421 is a deficient number, since it is larger than the sum of its proper divisors (578269579).

1002530421 is a wasteful number, since it uses less digits than its factorization.

1002530421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1002530421 is about 31662.7607924514. The cubic root of 1002530421 is about 1000.8427632173.

Adding to 1002530421 its reverse (1240352001), we get a palindrome (2242882422).

The spelling of 1002530421 in words is "one billion, two million, five hundred thirty thousand, four hundred twenty-one".