1001000123 has 8 divisors (see below), whose sum is σ = 1053987600. Its totient is φ = 948043008.

The previous prime is 1001000113. The next prime is 1001000131. The reversal of 1001000123 is 3210001001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001000123 - 2⁴ = 1001000107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001000123.

It is not an unprimeable number, because it can be changed into a prime (1001000113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97583 + ... + 107351.

It is an arithmetic number, because the mean of its divisors is an integer number (131748450).

Almost surely, 2^1001000123 is an apocalyptic number.

1001000123 is a deficient number, since it is larger than the sum of its proper divisors (52987477).

1001000123 is an equidigital number, since it uses as much as digits as its factorization.

1001000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15181.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1001000123 is about 31638.5859829418. The cubic root of 1001000123 is about 1000.3332632566. Note that the first 3 decimals are identical.

Adding to 1001000123 its reverse (3210001001), we get a palindrome (4211001124).

The spelling of 1001000123 in words is "one billion, one million, one hundred twenty-three", and thus it is an aban number.