12741257 has 4 divisors (see below), whose sum is σ = 12754560. Its totient is φ = 12727956.

The previous prime is 12741233. The next prime is 12741259. The reversal of 12741257 is 75214721.

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: 75214721 = 113 ⋅665617.

It is a cyclic number.

It is not a de Polignac number, because 12741257 - 2⁶ = 12741193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12741259) 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, 5093 + ... + 7170.

It is an arithmetic number, because the mean of its divisors is an integer number (3188640).

Almost surely, 2^12741257 is an apocalyptic number.

It is an amenable number.

12741257 is a deficient number, since it is larger than the sum of its proper divisors (13303).

12741257 is a wasteful number, since it uses less digits than its factorization.

12741257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13302.

The product of its digits is 3920, while the sum is 29.

The square root of 12741257 is about 3569.4897394446. The cubic root of 12741257 is about 233.5630252923.

Adding to 12741257 its reverse (75214721), we get a palindrome (87955978).

The spelling of 12741257 in words is "twelve million, seven hundred forty-one thousand, two hundred fifty-seven".