12042229 has 4 divisors (see below), whose sum is σ = 12430720. Its totient is φ = 11653740.

The previous prime is 12042197. The next prime is 12042241. The reversal of 12042229 is 92224021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92224021 = 59 ⋅1563119.

It is a cyclic number.

It is not a de Polignac number, because 12042229 - 2⁵ = 12042197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194199 + ... + 194260.

It is an arithmetic number, because the mean of its divisors is an integer number (3107680).

Almost surely, 2^12042229 is an apocalyptic number.

It is an amenable number.

12042229 is a deficient number, since it is larger than the sum of its proper divisors (388491).

12042229 is an equidigital number, since it uses as much as digits as its factorization.

12042229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388490.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 12042229 is about 3470.1914932753. The cubic root of 12042229 is about 229.2110904219.

The spelling of 12042229 in words is "twelve million, forty-two thousand, two hundred twenty-nine".