12042977 has 4 divisors (see below), whose sum is σ = 12052116. Its totient is φ = 12033840.

The previous prime is 12042931. The next prime is 12042983. The reversal of 12042977 is 77924021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 77924021 = 7 ⋅11132003.

It can be written as a sum of positive squares in 2 ways, for example, as 1860496 + 10182481 = 1364^2 + 3191^2 .

It is a cyclic number.

It is not a de Polignac number, because 12042977 - 2⁸ = 12042721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12042907) 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, 2174 + ... + 5367.

It is an arithmetic number, because the mean of its divisors is an integer number (3013029).

Almost surely, 2^12042977 is an apocalyptic number.

It is an amenable number.

12042977 is a deficient number, since it is larger than the sum of its proper divisors (9139).

12042977 is an equidigital number, since it uses as much as digits as its factorization.

12042977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 12042977 is about 3470.2992666339. The cubic root of 12042977 is about 229.2158361199.

Adding to 12042977 its reverse (77924021), we get a palindrome (89966998).

The spelling of 12042977 in words is "twelve million, forty-two thousand, nine hundred seventy-seven".