1003123120 has 20 divisors (see below), whose sum is σ = 2332261440. Its totient is φ = 401249216.

The previous prime is 1003123117. The next prime is 1003123123. The reversal of 1003123120 is 213213001.

It is an interprime number because it is at equal distance from previous prime (1003123117) and next prime (1003123123).

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 1003123120.

It is not an unprimeable number, because it can be changed into a prime (1003123123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6269440 + ... + 6269599.

It is an arithmetic number, because the mean of its divisors is an integer number (116613072).

Almost surely, 2^1003123120 is an apocalyptic number.

1003123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003123120 is an abundant number, since it is smaller than the sum of its proper divisors (1329138320).

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

1003123120 is a wasteful number, since it uses less digits than its factorization.

1003123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12539052 (or 12539046 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1003123120 is about 31672.1189692133. The cubic root of 1003123120 is about 1001.0399581122.

Adding to 1003123120 its reverse (213213001), we get a palindrome (1216336121).

The spelling of 1003123120 in words is "one billion, three million, one hundred twenty-three thousand, one hundred twenty".