12120450 has 24 divisors (see below), whose sum is σ = 30059088. Its totient is φ = 3232080.

The previous prime is 12120443. The next prime is 12120469. The reversal of 12120450 is 5402121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40252 + ... + 40551.

It is an arithmetic number, because the mean of its divisors is an integer number (1252462).

Almost surely, 2^12120450 is an apocalyptic number.

12120450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120450 is an abundant number, since it is smaller than the sum of its proper divisors (17938638).

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

12120450 is a wasteful number, since it uses less digits than its factorization.

12120450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80818 (or 80813 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12120450 is about 3481.4436660673. The cubic root of 12120450 is about 229.7063043978.

Adding to 12120450 its reverse (5402121), we get a palindrome (17522571).

The spelling of 12120450 in words is "twelve million, one hundred twenty thousand, four hundred fifty".