4321257 has 4 divisors (see below), whose sum is σ = 5761680. Its totient is φ = 2880836.

The previous prime is 4321243. The next prime is 4321259. The reversal of 4321257 is 7521234.

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 4321257 - 2⁴ = 4321241 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4321259) 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, 720207 + ... + 720212.

It is an arithmetic number, because the mean of its divisors is an integer number (1440420).

Almost surely, 2^4321257 is an apocalyptic number.

It is an amenable number.

4321257 is a deficient number, since it is larger than the sum of its proper divisors (1440423).

4321257 is a wasteful number, since it uses less digits than its factorization.

4321257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440422.

The product of its digits is 1680, while the sum is 24.

The square root of 4321257 is about 2078.7633342928. The cubic root of 4321257 is about 162.8808518664.

The spelling of 4321257 in words is "four million, three hundred twenty-one thousand, two hundred fifty-seven".