1003221040 has 20 divisors (see below), whose sum is σ = 2332489104. Its totient is φ = 401288384.

The previous prime is 1003221031. The next prime is 1003221059. The reversal of 1003221040 is 401223001.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1003221040.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6270052 + ... + 6270211.

Almost surely, 2^1003221040 is an apocalyptic number.

1003221040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003221040 is an abundant number, since it is smaller than the sum of its proper divisors (1329268064).

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

1003221040 is a wasteful number, since it uses less digits than its factorization.

1003221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12540276 (or 12540270 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1003221040 is about 31673.6647705945. The cubic root of 1003221040 is about 1001.0725292697.

Adding to 1003221040 its reverse (401223001), we get a palindrome (1404444041).

The spelling of 1003221040 in words is "one billion, three million, two hundred twenty-one thousand, forty".