120820966 has 24 divisors (see below), whose sum is σ = 213978456. Its totient is φ = 51004800.

The previous prime is 120820963. The next prime is 120820991. The reversal of 120820966 is 669028021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120820963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2635 + ... + 15766.

It is an arithmetic number, because the mean of its divisors is an integer number (8915769).

Almost surely, 2^120820966 is an apocalyptic number.

120820966 is a deficient number, since it is larger than the sum of its proper divisors (93157490).

120820966 is a wasteful number, since it uses less digits than its factorization.

120820966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18484 (or 18477 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 120820966 is about 10991.8590784271. The cubic root of 120820966 is about 494.3646796081.

Adding to 120820966 its reverse (669028021), we get a palindrome (789848987).

The spelling of 120820966 in words is "one hundred twenty million, eight hundred twenty thousand, nine hundred sixty-six".