1000120009 has 8 divisors (see below), whose sum is σ = 1154092160. Its totient is φ = 848922336.

The previous prime is 1000120007. The next prime is 1000120021. The reversal of 1000120009 is 9000210001.

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 1000120009 - 2¹ = 1000120007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000120001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692844 + ... + 694285.

It is an arithmetic number, because the mean of its divisors is an integer number (144261520).

Almost surely, 2^1000120009 is an apocalyptic number.

It is an amenable number.

1000120009 is a deficient number, since it is larger than the sum of its proper divisors (153972151).

1000120009 is a wasteful number, since it uses less digits than its factorization.

1000120009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387239.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1000120009 is about 31624.6740536563. The cubic root of 1000120009 is about 1000.0400013999.

The spelling of 1000120009 in words is "one billion, one hundred twenty thousand, nine".