12021942 has 32 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 3869888.

The previous prime is 12021923. The next prime is 12021953. The reversal of 12021942 is 24912021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24859 + ... + 25337.

It is an arithmetic number, because the mean of its divisors is an integer number (777600).

Almost surely, 2^12021942 is an apocalyptic number.

12021942 is an abundant number, since it is smaller than the sum of its proper divisors (12861258).

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

12021942 is a wasteful number, since it uses less digits than its factorization.

12021942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12021942 is about 3467.2672236215. The cubic root of 12021942 is about 229.0823042131.

Adding to 12021942 its reverse (24912021), we get a palindrome (36933963).

The spelling of 12021942 in words is "twelve million, twenty-one thousand, nine hundred forty-two".