1113412145 has 4 divisors (see below), whose sum is σ = 1336094580. Its totient is φ = 890729712.

The previous prime is 1113412123. The next prime is 1113412163. The reversal of 1113412145 is 5412143111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5412143111 = 18097 ⋅299063.

It can be written as a sum of positive squares in 2 ways, for example, as 656179456 + 457232689 = 25616^2 + 21383^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113412145 - 2¹⁴ = 1113395761 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1113412145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111341210 + ... + 111341219.

It is an arithmetic number, because the mean of its divisors is an integer number (334023645).

Almost surely, 2^1113412145 is an apocalyptic number.

It is an amenable number.

1113412145 is a deficient number, since it is larger than the sum of its proper divisors (222682435).

1113412145 is an equidigital number, since it uses as much as digits as its factorization.

1113412145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222682434.

The product of its digits is 480, while the sum is 23.

The square root of 1113412145 is about 33367.8309903416. The cubic root of 1113412145 is about 1036.4586603868.

Adding to 1113412145 its reverse (5412143111), we get a palindrome (6525555256).

The spelling of 1113412145 in words is "one billion, one hundred thirteen million, four hundred twelve thousand, one hundred forty-five".