12842273 has 4 divisors (see below), whose sum is σ = 13285140. Its totient is φ = 12399408.

The previous prime is 12842237. The next prime is 12842279. The reversal of 12842273 is 37224821.

12842273 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37224821 = 3061 ⋅12161.

It can be written as a sum of positive squares in 2 ways, for example, as 3157729 + 9684544 = 1777^2 + 3112^2 .

It is a cyclic number.

It is not a de Polignac number, because 12842273 - 2⁶ = 12842209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 442837 = 12842273 / (1 + 2 + 8 + 4 + 2 + 2 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12842279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221390 + ... + 221447.

It is an arithmetic number, because the mean of its divisors is an integer number (3321285).

Almost surely, 2^12842273 is an apocalyptic number.

It is an amenable number.

12842273 is a deficient number, since it is larger than the sum of its proper divisors (442867).

12842273 is an equidigital number, since it uses as much as digits as its factorization.

12842273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442866.

The product of its digits is 5376, while the sum is 29.

The square root of 12842273 is about 3583.6117256198. The cubic root of 12842273 is about 234.1786506759.

The spelling of 12842273 in words is "twelve million, eight hundred forty-two thousand, two hundred seventy-three".