9145212 has 12 divisors (see below), whose sum is σ = 21338856. Its totient is φ = 3048400.

The previous prime is 9145187. The next prime is 9145219. The reversal of 9145212 is 2125419.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9145219) 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 3 ways as a sum of consecutive naturals, for example, 381039 + ... + 381062.

It is an arithmetic number, because the mean of its divisors is an integer number (1778238).

Almost surely, 2^9145212 is an apocalyptic number.

It is an amenable number.

9145212 is an abundant number, since it is smaller than the sum of its proper divisors (12193644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9145212 is a wasteful number, since it uses less digits than its factorization.

9145212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762108 (or 762106 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 9145212 is about 3024.1051569018. The cubic root of 9145212 is about 209.1211342684.

The spelling of 9145212 in words is "nine million, one hundred forty-five thousand, two hundred twelve".