12055642 has 4 divisors (see below), whose sum is σ = 18083466. Its totient is φ = 6027820.

The previous prime is 12055639. The next prime is 12055649. The reversal of 12055642 is 24655021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7557001 + 4498641 = 2749^2 + 2121^2 .

It is not an unprimeable number, because it can be changed into a prime (12055649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3013909 + ... + 3013912.

Almost surely, 2^12055642 is an apocalyptic number.

12055642 is a deficient number, since it is larger than the sum of its proper divisors (6027824).

12055642 is an equidigital number, since it uses as much as digits as its factorization.

12055642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027823.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 12055642 is about 3472.1235577093. The cubic root of 12055642 is about 229.2961596010.

The spelling of 12055642 in words is "twelve million, fifty-five thousand, six hundred forty-two".