112143421 has 4 divisors (see below), whose sum is σ = 120769852. Its totient is φ = 103516992.

The previous prime is 112143419. The next prime is 112143433. The reversal of 112143421 is 124341211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7080921 + 105062500 = 2661^2 + 10250^2 .

It is a cyclic number.

It is not a de Polignac number, because 112143421 - 2¹ = 112143419 is a prime.

It is a super-2 number, since 2×112143421² = 25152293747166482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112143481) 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, 4313196 + ... + 4313221.

It is an arithmetic number, because the mean of its divisors is an integer number (30192463).

Almost surely, 2^112143421 is an apocalyptic number.

It is an amenable number.

112143421 is a deficient number, since it is larger than the sum of its proper divisors (8626431).

112143421 is an equidigital number, since it uses as much as digits as its factorization.

112143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8626430.

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

The square root of 112143421 is about 10589.7790817373. The cubic root of 112143421 is about 482.2341180565.

Adding to 112143421 its reverse (124341211), we get a palindrome (236484632).

The spelling of 112143421 in words is "one hundred twelve million, one hundred forty-three thousand, four hundred twenty-one".