1042012243 has 4 divisors (see below), whose sum is σ = 1042331400. Its totient is φ = 1041693088.

The previous prime is 1042012183. The next prime is 1042012261. The reversal of 1042012243 is 3422102401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3422102401 = 29231 ⋅117071.

It is a cyclic number.

It is not a de Polignac number, because 1042012243 - 2²⁵ = 1008457811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042012243.

It is not an unprimeable number, because it can be changed into a prime (1042016243) by changing a digit.

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, 154630 + ... + 161227.

It is an arithmetic number, because the mean of its divisors is an integer number (260582850).

Almost surely, 2^1042012243 is an apocalyptic number.

1042012243 is a deficient number, since it is larger than the sum of its proper divisors (319157).

1042012243 is an equidigital number, since it uses as much as digits as its factorization.

1042012243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319156.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1042012243 is about 32280.2144199818. The cubic root of 1042012243 is about 1013.8124196715.

Adding to 1042012243 its reverse (3422102401), we get a palindrome (4464114644).

The spelling of 1042012243 in words is "one billion, forty-two million, twelve thousand, two hundred forty-three".