12042251 has 4 divisors (see below), whose sum is σ = 12968592. Its totient is φ = 11115912.

The previous prime is 12042241. The next prime is 12042253. The reversal of 12042251 is 15224021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15224021 = 43 ⋅354047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12042251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12042253) 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 3 ways as a sum of consecutive naturals, for example, 463151 + ... + 463176.

It is an arithmetic number, because the mean of its divisors is an integer number (3242148).

Almost surely, 2^12042251 is an apocalyptic number.

12042251 is a deficient number, since it is larger than the sum of its proper divisors (926341).

12042251 is an equidigital number, since it uses as much as digits as its factorization.

12042251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926340.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12042251 is about 3470.1946631277. The cubic root of 12042251 is about 229.2112300041.

Adding to 12042251 its reverse (15224021), we get a palindrome (27266272).

The spelling of 12042251 in words is "twelve million, forty-two thousand, two hundred fifty-one".