73112145 has 16 divisors (see below), whose sum is σ = 117313920. Its totient is φ = 38881664.

The previous prime is 73112141. The next prime is 73112173. The reversal of 73112145 is 54121137.

It is a cyclic number.

It is not a de Polignac number, because 73112145 - 2² = 73112141 is a prime.

It is a super-3 number, since 3×73112145³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73112141) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1404 + ... + 12173.

It is an arithmetic number, because the mean of its divisors is an integer number (7332120).

Almost surely, 2^73112145 is an apocalyptic number.

It is an amenable number.

73112145 is a deficient number, since it is larger than the sum of its proper divisors (44201775).

73112145 is a wasteful number, since it uses less digits than its factorization.

73112145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13944.

The product of its digits is 840, while the sum is 24.

The square root of 73112145 is about 8550.5640164845. The cubic root of 73112145 is about 418.1478247487.

The spelling of 73112145 in words is "seventy-three million, one hundred twelve thousand, one hundred forty-five".