12141257 has 4 divisors (see below), whose sum is σ = 12340356. Its totient is φ = 11942160.

The previous prime is 12141253. The next prime is 12141277. The reversal of 12141257 is 75214121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6869641 + 5271616 = 2621^2 + 2296^2 .

It is a cyclic number.

It is not a de Polignac number, because 12141257 - 2² = 12141253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12141251) 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, 99458 + ... + 99579.

It is an arithmetic number, because the mean of its divisors is an integer number (3085089).

Almost surely, 2^12141257 is an apocalyptic number.

It is an amenable number.

12141257 is a deficient number, since it is larger than the sum of its proper divisors (199099).

12141257 is an equidigital number, since it uses as much as digits as its factorization.

12141257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199098.

The product of its digits is 560, while the sum is 23.

The square root of 12141257 is about 3484.4306565062. The cubic root of 12141257 is about 229.8376737423.

Adding to 12141257 its reverse (75214121), we get a palindrome (87355378).

The spelling of 12141257 in words is "twelve million, one hundred forty-one thousand, two hundred fifty-seven".