12030642 has 24 divisors (see below), whose sum is σ = 28072044. Its totient is φ = 3701664.

The previous prime is 12030607. The next prime is 12030653. The reversal of 12030642 is 24603021.

It is a happy number.

12030642 is a `hidden beast` number, since 1 + 20 + 3 + 0 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11148921 + 881721 = 3339^2 + 939^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 25473 + ... + 25940.

Almost surely, 2^12030642 is an apocalyptic number.

12030642 is an abundant number, since it is smaller than the sum of its proper divisors (16041402).

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

12030642 is a wasteful number, since it uses less digits than its factorization.

12030642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51434 (or 51431 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12030642 is about 3468.5215870742. The cubic root of 12030642 is about 229.1375514012.

Adding to 12030642 its reverse (24603021), we get a palindrome (36633663).

The spelling of 12030642 in words is "twelve million, thirty thousand, six hundred forty-two".