1003243021 has 16 divisors (see below), whose sum is σ = 1123476480. Its totient is φ = 888140080.

The previous prime is 1003243001. The next prime is 1003243039. The reversal of 1003243021 is 1203423001.

It is a happy number.

1003243021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1003243021 - 2¹³ = 1003234829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003242986 and 1003243004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003243001) 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, 62220 + ... + 76666.

It is an arithmetic number, because the mean of its divisors is an integer number (70217280).

Almost surely, 2^1003243021 is an apocalyptic number.

1003243021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1003243021 is a deficient number, since it is larger than the sum of its proper divisors (120233459).

1003243021 is a wasteful number, since it uses less digits than its factorization.

1003243021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14624.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1003243021 is about 31674.0117604322. The cubic root of 1003243021 is about 1001.0798405247.

Adding to 1003243021 its reverse (1203423001), we get a palindrome (2206666022).

The spelling of 1003243021 in words is "one billion, three million, two hundred forty-three thousand, twenty-one".