4012015243 has 4 divisors (see below), whose sum is σ = 4223173960. Its totient is φ = 3800856528.

The previous prime is 4012015219. The next prime is 4012015289. The reversal of 4012015243 is 3425102104.

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

It is a cyclic number.

It is not a de Polignac number, because 4012015243 - 2⁹ = 4012014731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4012010243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105579330 + ... + 105579367.

It is an arithmetic number, because the mean of its divisors is an integer number (1055793490).

Almost surely, 2^4012015243 is an apocalyptic number.

4012015243 is a deficient number, since it is larger than the sum of its proper divisors (211158717).

4012015243 is a wasteful number, since it uses less digits than its factorization.

4012015243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211158716.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4012015243 is about 63340.4708144801. The cubic root of 4012015243 is about 1588.9888806304.

Adding to 4012015243 its reverse (3425102104), we get a palindrome (7437117347).

The spelling of 4012015243 in words is "four billion, twelve million, fifteen thousand, two hundred forty-three".