4256123 has 4 divisors (see below), whose sum is σ = 4295280. Its totient is φ = 4216968.

The previous prime is 4256117. The next prime is 4256141. The reversal of 4256123 is 3216524.

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

It is a cyclic number.

It is not a de Polignac number, because 4256123 - 2²² = 61819 is a prime.

It is a super-2 number, since 2×4256123² = 36229165982258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4256723) 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, 19415 + ... + 19632.

It is an arithmetic number, because the mean of its divisors is an integer number (1073820).

Almost surely, 2^4256123 is an apocalyptic number.

4256123 is a deficient number, since it is larger than the sum of its proper divisors (39157).

4256123 is a wasteful number, since it uses less digits than its factorization.

4256123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39156.

The product of its digits is 1440, while the sum is 23.

The square root of 4256123 is about 2063.0373239474. The cubic root of 4256123 is about 162.0583415331.

It can be divided in two parts, 42 and 56123, that added together give a palindrome (56165).

The spelling of 4256123 in words is "four million, two hundred fifty-six thousand, one hundred twenty-three".