12515042 has 4 divisors (see below), whose sum is σ = 18772566. Its totient is φ = 6257520.

The previous prime is 12515039. The next prime is 12515071. The reversal of 12515042 is 24051521.

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., 11703241 + 811801 = 3421^2 + 901^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128759 + ... + 3128762.

Almost surely, 2^12515042 is an apocalyptic number.

12515042 is a deficient number, since it is larger than the sum of its proper divisors (6257524).

12515042 is an equidigital number, since it uses as much as digits as its factorization.

12515042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6257523.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12515042 is about 3537.6605263931. The cubic root of 12515042 is about 232.1724960703.

Adding to 12515042 its reverse (24051521), we get a palindrome (36566563).

The spelling of 12515042 in words is "twelve million, five hundred fifteen thousand, forty-two".