1002404040 has 64 divisors (see below), whose sum is σ = 3280599360. Its totient is φ = 243006720.

The previous prime is 1002404027. The next prime is 1002404059. The reversal of 1002404040 is 404042001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378379 + ... + 381018.

It is an arithmetic number, because the mean of its divisors is an integer number (51259365).

Almost surely, 2^1002404040 is an apocalyptic number.

1002404040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002404040 is an abundant number, since it is smaller than the sum of its proper divisors (2278195320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002404040 is a wasteful number, since it uses less digits than its factorization.

1002404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759422 (or 759418 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1002404040 is about 31660.7649939164. The cubic root of 1002404040 is about 1000.8007053665.

Adding to 1002404040 its reverse (404042001), we get a palindrome (1406446041).

The spelling of 1002404040 in words is "one billion, two million, four hundred four thousand, forty".