1112403521 has 8 divisors (see below), whose sum is σ = 1115927400. Its totient is φ = 1108886400.

The previous prime is 1112403511. The next prime is 1112403529. The reversal of 1112403521 is 1253042111.

It can be written as a sum of positive squares in 4 ways, for example, as 77880625 + 1034522896 = 8825^2 + 32164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1112403521 - 2¹⁴ = 1112387137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112403493 and 1112403502.

It is not an unprimeable number, because it can be changed into a prime (1112403529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665675 + ... + 667343.

It is an arithmetic number, because the mean of its divisors is an integer number (139490925).

Almost surely, 2^1112403521 is an apocalyptic number.

It is an amenable number.

1112403521 is a deficient number, since it is larger than the sum of its proper divisors (3523879).

1112403521 is a wasteful number, since it uses less digits than its factorization.

1112403521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1112403521 is about 33352.7138476017. The cubic root of 1112403521 is about 1036.1455948511.

Adding to 1112403521 its reverse (1253042111), we get a palindrome (2365445632).

The spelling of 1112403521 in words is "one billion, one hundred twelve million, four hundred three thousand, five hundred twenty-one".