1112420443 has 4 divisors (see below), whose sum is σ = 1112799600. Its totient is φ = 1112041288.

The previous prime is 1112420431. The next prime is 1112420453. The reversal of 1112420443 is 3440242111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3440242111 = 17 ⋅202367183.

It is a cyclic number.

It is not a de Polignac number, because 1112420443 - 2¹³ = 1112412251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112420423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185143 + ... + 191056.

It is an arithmetic number, because the mean of its divisors is an integer number (278199900).

Almost surely, 2^1112420443 is an apocalyptic number.

1112420443 is a deficient number, since it is larger than the sum of its proper divisors (379157).

1112420443 is an equidigital number, since it uses as much as digits as its factorization.

1112420443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379156.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1112420443 is about 33352.9675291420. The cubic root of 1112420443 is about 1036.1508488099.

Adding to 1112420443 its reverse (3440242111), we get a palindrome (4552662554).

The spelling of 1112420443 in words is "one billion, one hundred twelve million, four hundred twenty thousand, four hundred forty-three".