12070042 has 4 divisors (see below), whose sum is σ = 18105066. Its totient is φ = 6035020.

The previous prime is 12070021. The next prime is 12070049. The reversal of 12070042 is 24007021.

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., 12047841 + 22201 = 3471^2 + 149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12069998 and 12070025.

It is not an unprimeable number, because it can be changed into a prime (12070049) 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 as a sum of consecutive naturals, namely, 3017509 + ... + 3017512.

Almost surely, 2^12070042 is an apocalyptic number.

12070042 is a deficient number, since it is larger than the sum of its proper divisors (6035024).

12070042 is an equidigital number, since it uses as much as digits as its factorization.

12070042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6035023.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 12070042 is about 3474.1965977762. The cubic root of 12070042 is about 229.3874184190.

Adding to 12070042 its reverse (24007021), we get a palindrome (36077063).

The spelling of 12070042 in words is "twelve million, seventy thousand, forty-two".