12142273 has 32 divisors (see below), whose sum is σ = 15523200. Its totient is φ = 9331200.

The previous prime is 12142261. The next prime is 12142283. The reversal of 12142273 is 37224121.

It is a cyclic number.

It is not a de Polignac number, because 12142273 - 2⁹ = 12141761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12142283) 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 31 ways as a sum of consecutive naturals, for example, 111343 + ... + 111451.

It is an arithmetic number, because the mean of its divisors is an integer number (485100).

Almost surely, 2^12142273 is an apocalyptic number.

12142273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12142273 is a deficient number, since it is larger than the sum of its proper divisors (3380927).

12142273 is a wasteful number, since it uses less digits than its factorization.

12142273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193.

The product of its digits is 672, while the sum is 22.

The square root of 12142273 is about 3484.5764448495. The cubic root of 12142273 is about 229.8440846261.

Adding to 12142273 its reverse (37224121), we get a palindrome (49366394).

The spelling of 12142273 in words is "twelve million, one hundred forty-two thousand, two hundred seventy-three".