12420332 has 24 divisors (see below), whose sum is σ = 22342320. Its totient is φ = 6039360.

The previous prime is 12420329. The next prime is 12420337. The reversal of 12420332 is 23302421.

It is a self number, because there is not a number n which added to its sum of digits gives 12420332.

It is not an unprimeable number, because it can be changed into a prime (12420337) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26363 + ... + 26829.

It is an arithmetic number, because the mean of its divisors is an integer number (930930).

Almost surely, 2^12420332 is an apocalyptic number.

It is an amenable number.

12420332 is a deficient number, since it is larger than the sum of its proper divisors (9921988).

12420332 is a wasteful number, since it uses less digits than its factorization.

12420332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 12420332 is about 3524.2491398878. The cubic root of 12420332 is about 231.5853423528.

Adding to 12420332 its reverse (23302421), we get a palindrome (35722753).

The spelling of 12420332 in words is "twelve million, four hundred twenty thousand, three hundred thirty-two".