112142321 has 4 divisors (see below), whose sum is σ = 112402944. Its totient is φ = 111881700.

The previous prime is 112142311. The next prime is 112142347. The reversal of 112142321 is 123241211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123241211 = 17 ⋅7249483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112142321 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 112142321.

It is not an unprimeable number, because it can be changed into a prime (112142311) 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, 129665 + ... + 130526.

It is an arithmetic number, because the mean of its divisors is an integer number (28100736).

Almost surely, 2^112142321 is an apocalyptic number.

It is an amenable number.

112142321 is a deficient number, since it is larger than the sum of its proper divisors (260623).

112142321 is an equidigital number, since it uses as much as digits as its factorization.

112142321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260622.

The product of its digits is 96, while the sum is 17.

The square root of 112142321 is about 10589.7271447380. The cubic root of 112142321 is about 482.2325413278.

Adding to 112142321 its reverse (123241211), we get a palindrome (235383532).

The spelling of 112142321 in words is "one hundred twelve million, one hundred forty-two thousand, three hundred twenty-one".