12142077 has 4 divisors (see below), whose sum is σ = 16189440. Its totient is φ = 8094716.

The previous prime is 12142057. The next prime is 12142079. The reversal of 12142077 is 77024121.

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.

It is a cyclic number.

It is not a de Polignac number, because 12142077 - 2¹² = 12137981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142079) 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, 2023677 + ... + 2023682.

It is an arithmetic number, because the mean of its divisors is an integer number (4047360).

Almost surely, 2^12142077 is an apocalyptic number.

It is an amenable number.

12142077 is a deficient number, since it is larger than the sum of its proper divisors (4047363).

12142077 is an equidigital number, since it uses as much as digits as its factorization.

12142077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4047362.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 12142077 is about 3484.5483208014. The cubic root of 12142077 is about 229.8428479087.

Adding to 12142077 its reverse (77024121), we get a palindrome (89166198).

The spelling of 12142077 in words is "twelve million, one hundred forty-two thousand, seventy-seven".