1042540115 has 4 divisors (see below), whose sum is σ = 1251048144. Its totient is φ = 834032088.

The previous prime is 1042540099. The next prime is 1042540123. The reversal of 1042540115 is 5110452401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5110452401 = 19 ⋅268971179.

It is a cyclic number.

It is not a de Polignac number, because 1042540115 - 2⁴ = 1042540099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104254007 + ... + 104254016.

It is an arithmetic number, because the mean of its divisors is an integer number (312762036).

Almost surely, 2^1042540115 is an apocalyptic number.

1042540115 is a deficient number, since it is larger than the sum of its proper divisors (208508029).

1042540115 is an equidigital number, since it uses as much as digits as its factorization.

1042540115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208508028.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1042540115 is about 32288.3897864232. The cubic root of 1042540115 is about 1013.9835861971.

Adding to 1042540115 its reverse (5110452401), we get a palindrome (6152992516).

The spelling of 1042540115 in words is "one billion, forty-two million, five hundred forty thousand, one hundred fifteen".