1124215745 has 4 divisors (see below), whose sum is σ = 1349058900. Its totient is φ = 899372592.

The previous prime is 1124215739. The next prime is 1124215747. The reversal of 1124215745 is 5475124211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5475124211 = 311 ⋅17604901.

It can be written as a sum of positive squares in 2 ways, for example, as 399960001 + 724255744 = 19999^2 + 26912^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124215745 - 2⁶ = 1124215681 is a prime.

It is a super-2 number, since 2×1124215745² = 2527722082611810050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1124215747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112421570 + ... + 112421579.

It is an arithmetic number, because the mean of its divisors is an integer number (337264725).

Almost surely, 2^1124215745 is an apocalyptic number.

It is an amenable number.

1124215745 is a deficient number, since it is larger than the sum of its proper divisors (224843155).

1124215745 is an equidigital number, since it uses as much as digits as its factorization.

1124215745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224843154.

The product of its digits is 11200, while the sum is 32.

The square root of 1124215745 is about 33529.3266410168. The cubic root of 1124215745 is about 1039.8001788804.

Adding to 1124215745 its reverse (5475124211), we get a palindrome (6599339956).

The spelling of 1124215745 in words is "one billion, one hundred twenty-four million, two hundred fifteen thousand, seven hundred forty-five".