1002404 has 24 divisors (see below), whose sum is σ = 1943928. Its totient is φ = 449280.

The previous prime is 1002403. The next prime is 1002427. The reversal of 1002404 is 4042001.

It can be written as a sum of positive squares in 4 ways, for example, as 96100 + 906304 = 310^2 + 952^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1664 + ... + 2184.

It is an arithmetic number, because the mean of its divisors is an integer number (80997).

2^1002404 is an apocalyptic number.

It is an amenable number.

1002404 is a deficient number, since it is larger than the sum of its proper divisors (941524).

1002404 is a wasteful number, since it uses less digits than its factorization.

1002404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1002404 is about 1001.2012784650. The cubic root of 1002404 is about 100.0800692054.

Adding to 1002404 its reverse (4042001), we get a palindrome (5044405).

It can be divided in two parts, 100240 and 4, that multiplied together give a triangular number (400960 = T₈₉₅).

The spelling of 1002404 in words is "one million, two thousand, four hundred four".