112421143 has 4 divisors (see below), whose sum is σ = 112869288. Its totient is φ = 111973000.

The previous prime is 112421107. The next prime is 112421203. The reversal of 112421143 is 341124211.

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 112421143 - 2⁹ = 112420631 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 112421143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112427143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223696 + ... + 224197.

It is an arithmetic number, because the mean of its divisors is an integer number (28217322).

Almost surely, 2^112421143 is an apocalyptic number.

112421143 is a deficient number, since it is larger than the sum of its proper divisors (448145).

112421143 is an equidigital number, since it uses as much as digits as its factorization.

112421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448144.

The product of its digits is 192, while the sum is 19.

The square root of 112421143 is about 10602.8837115192. The cubic root of 112421143 is about 482.6318724622.

Adding to 112421143 its reverse (341124211), we get a palindrome (453545354).

The spelling of 112421143 in words is "one hundred twelve million, four hundred twenty-one thousand, one hundred forty-three".