1152745123 has 4 divisors (see below), whose sum is σ = 1153095760. Its totient is φ = 1152394488.

The previous prime is 1152745103. The next prime is 1152745141. The reversal of 1152745123 is 3215472511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3215472511 = 17317 ⋅185683.

It is a cyclic number.

It is not a de Polignac number, because 1152745123 - 2¹⁷ = 1152614051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152745103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170340 + ... + 176977.

It is an arithmetic number, because the mean of its divisors is an integer number (288273940).

Almost surely, 2^1152745123 is an apocalyptic number.

1152745123 is a deficient number, since it is larger than the sum of its proper divisors (350637).

1152745123 is an equidigital number, since it uses as much as digits as its factorization.

1152745123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350636.

The product of its digits is 8400, while the sum is 31.

The square root of 1152745123 is about 33952.1004210343. The cubic root of 1152745123 is about 1048.5225245606.

The spelling of 1152745123 in words is "one billion, one hundred fifty-two million, seven hundred forty-five thousand, one hundred twenty-three".