1000120008 has 16 divisors (see below), whose sum is σ = 2500300080. Its totient is φ = 333373328.

The previous prime is 1000120007. The next prime is 1000120021. The reversal of 1000120008 is 8000210001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1000119975 and 1000120002.

It is not an unprimeable number, because it can be changed into a prime (1000120001) 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 3 ways as a sum of consecutive naturals, for example, 20835810 + ... + 20835857.

It is an arithmetic number, because the mean of its divisors is an integer number (156268755).

Almost surely, 2^1000120008 is an apocalyptic number.

It is an amenable number.

1000120008 is an abundant number, since it is smaller than the sum of its proper divisors (1500180072).

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

1000120008 is a wasteful number, since it uses less digits than its factorization.

1000120008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41671676 (or 41671672 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1000120008 is about 31624.6740378458. The cubic root of 1000120008 is about 1000.0400010666.

Adding to 1000120008 its reverse (8000210001), we get a palindrome (9000330009).

The spelling of 1000120008 in words is "one billion, one hundred twenty thousand, eight".