1110123145 has 4 divisors (see below), whose sum is σ = 1332147780. Its totient is φ = 888098512.

The previous prime is 1110123139. The next prime is 1110123151. The reversal of 1110123145 is 5413210111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5413210111 = 31 ⋅174619681.

It is an interprime number because it is at equal distance from previous prime (1110123139) and next prime (1110123151).

It can be written as a sum of positive squares in 2 ways, for example, as 792535104 + 317588041 = 28152^2 + 17821^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110123145 - 2¹⁷ = 1109992073 is a prime.

It is an unprimeable number.

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, 111012310 + ... + 111012319.

It is an arithmetic number, because the mean of its divisors is an integer number (333036945).

Almost surely, 2^1110123145 is an apocalyptic number.

It is an amenable number.

1110123145 is a deficient number, since it is larger than the sum of its proper divisors (222024635).

1110123145 is an equidigital number, since it uses as much as digits as its factorization.

1110123145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222024634.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1110123145 is about 33318.5105459413. The cubic root of 1110123145 is about 1035.4370935778.

Adding to 1110123145 its reverse (5413210111), we get a palindrome (6523333256).

The spelling of 1110123145 in words is "one billion, one hundred ten million, one hundred twenty-three thousand, one hundred forty-five".