14121257 has 4 divisors (see below), whose sum is σ = 14232576. Its totient is φ = 14009940.

The previous prime is 14121229. The next prime is 14121281. The reversal of 14121257 is 75212141.

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: 75212141 = 53 ⋅1419097.

It is a cyclic number.

It is not a de Polignac number, because 14121257 - 2¹⁰ = 14120233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14126257) 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, 55469 + ... + 55722.

It is an arithmetic number, because the mean of its divisors is an integer number (3558144).

Almost surely, 2^14121257 is an apocalyptic number.

It is an amenable number.

14121257 is a deficient number, since it is larger than the sum of its proper divisors (111319).

14121257 is a wasteful number, since it uses less digits than its factorization.

14121257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111318.

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

The square root of 14121257 is about 3757.8261002872. The cubic root of 14121257 is about 241.7080524181.

Adding to 14121257 its reverse (75212141), we get a palindrome (89333398).

The spelling of 14121257 in words is "fourteen million, one hundred twenty-one thousand, two hundred fifty-seven".