12512042 has 4 divisors (see below), whose sum is σ = 18768066. Its totient is φ = 6256020.

The previous prime is 12512039. The next prime is 12512047. The reversal of 12512042 is 24021521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24021521 = 563 ⋅42667.

It can be written as a sum of positive squares in only one way, i.e., 10896601 + 1615441 = 3301^2 + 1271^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12512042.

It is not an unprimeable number, because it can be changed into a prime (12512047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128009 + ... + 3128012.

Almost surely, 2^12512042 is an apocalyptic number.

12512042 is a deficient number, since it is larger than the sum of its proper divisors (6256024).

12512042 is an equidigital number, since it uses as much as digits as its factorization.

12512042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256023.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12512042 is about 3537.2364919524. The cubic root of 12512042 is about 232.1539431122.

Adding to 12512042 its reverse (24021521), we get a palindrome (36533563).

It can be divided in two parts, 125 and 12042, that added together give a cube (12167 = 23³).

The spelling of 12512042 in words is "twelve million, five hundred twelve thousand, forty-two".