1003002020 has 48 divisors (see below), whose sum is σ = 2220099840. Its totient is φ = 379581696.

The previous prime is 1003002017. The next prime is 1003002029. The reversal of 1003002020 is 202003001.

It is a junction number, because it is equal to n+sod(n) for n = 1003001989 and 1003002007.

It is not an unprimeable number, because it can be changed into a prime (1003002029) 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, 417944 + ... + 420336.

It is an arithmetic number, because the mean of its divisors is an integer number (46252080).

Almost surely, 2^1003002020 is an apocalyptic number.

1003002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003002020 is an abundant number, since it is smaller than the sum of its proper divisors (1217097820).

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

1003002020 is a wasteful number, since it uses less digits than its factorization.

1003002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524 (or 3522 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 1003002020 is about 31670.2071354136. The cubic root of 1003002020 is about 1000.9996736529. Note that the first 3 decimals are identical.

Adding to 1003002020 its reverse (202003001), we get a palindrome (1205005021).

The spelling of 1003002020 in words is "one billion, three million, two thousand, twenty".