120009812 has 12 divisors (see below), whose sum is σ = 226172436. Its totient is φ = 55389120.

The previous prime is 120009803. The next prime is 120009821. The reversal of 120009812 is 218900021.

It is an interprime number because it is at equal distance from previous prime (120009803) and next prime (120009821).

It can be written as a sum of positive squares in 2 ways, for example, as 57820816 + 62188996 = 7604^2 + 7886^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153889 + ... + 1153992.

It is an arithmetic number, because the mean of its divisors is an integer number (18847703).

Almost surely, 2^120009812 is an apocalyptic number.

It is an amenable number.

120009812 is a deficient number, since it is larger than the sum of its proper divisors (106162624).

120009812 is a wasteful number, since it uses less digits than its factorization.

120009812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307898 (or 2307896 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 120009812 is about 10954.8989954267. The cubic root of 120009812 is about 493.2558580957.

Adding to 120009812 its reverse (218900021), we get a palindrome (338909833).

It can be divided in two parts, 12000 and 9812, that added together give a palindrome (21812).

The spelling of 120009812 in words is "one hundred twenty million, nine thousand, eight hundred twelve".