112404821 has 4 divisors (see below), whose sum is σ = 115146444. Its totient is φ = 109663200.

The previous prime is 112404811. The next prime is 112404823. The reversal of 112404821 is 128404211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 128404211 = 13 ⋅9877247.

It can be written as a sum of positive squares in 2 ways, for example, as 48804196 + 63600625 = 6986^2 + 7975^2 .

It is a cyclic number.

It is not a de Polignac number, because 112404821 - 2¹⁸ = 112142677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112404823) 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, 1370750 + ... + 1370831.

It is an arithmetic number, because the mean of its divisors is an integer number (28786611).

Almost surely, 2^112404821 is an apocalyptic number.

It is an amenable number.

112404821 is a deficient number, since it is larger than the sum of its proper divisors (2741623).

112404821 is an equidigital number, since it uses as much as digits as its factorization.

112404821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741622.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 112404821 is about 10602.1139873140. The cubic root of 112404821 is about 482.6085141671.

It can be divided in two parts, 11240 and 4821, that added together give a palindrome (16061).

The spelling of 112404821 in words is "one hundred twelve million, four hundred four thousand, eight hundred twenty-one".