1124005145 has 4 divisors (see below), whose sum is σ = 1348806180. Its totient is φ = 899204112.

The previous prime is 1124005123. The next prime is 1124005151. The reversal of 1124005145 is 5415004211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5415004211 = 2713 ⋅1995947.

It can be written as a sum of positive squares in 2 ways, for example, as 811281289 + 312723856 = 28483^2 + 17684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124005145 - 2⁶ = 1124005081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1124005145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112400510 + ... + 112400519.

It is an arithmetic number, because the mean of its divisors is an integer number (337201545).

Almost surely, 2^1124005145 is an apocalyptic number.

It is an amenable number.

1124005145 is a deficient number, since it is larger than the sum of its proper divisors (224801035).

1124005145 is an equidigital number, since it uses as much as digits as its factorization.

1124005145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224801034.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1124005145 is about 33526.1859596346. The cubic root of 1124005145 is about 1039.7352460316.

Adding to 1124005145 its reverse (5415004211), we get a palindrome (6539009356).

The spelling of 1124005145 in words is "one billion, one hundred twenty-four million, five thousand, one hundred forty-five".