12019842 has 12 divisors (see below), whose sum is σ = 26043030. Its totient is φ = 4006608.

The previous prime is 12019841. The next prime is 12019849. The reversal of 12019842 is 24891021.

It can be written as a sum of positive squares in only one way, i.e., 9126441 + 2893401 = 3021^2 + 1701^2 .

It is not an unprimeable number, because it can be changed into a prime (12019841) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 333867 + ... + 333902.

Almost surely, 2^12019842 is an apocalyptic number.

12019842 is an abundant number, since it is smaller than the sum of its proper divisors (14023188).

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

12019842 is a wasteful number, since it uses less digits than its factorization.

12019842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667777 (or 667774 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12019842 is about 3466.9643782422. The cubic root of 12019842 is about 229.0689646918.

The spelling of 12019842 in words is "twelve million, nineteen thousand, eight hundred forty-two".