7857423 has 12 divisors (see below), whose sum is σ = 12971088. Its totient is φ = 4489920.

The previous prime is 7857407. The next prime is 7857457. The reversal of 7857423 is 3247587.

It is not a de Polignac number, because 7857423 - 2⁴ = 7857407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7857403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62298 + ... + 62423.

It is an arithmetic number, because the mean of its divisors is an integer number (1080924).

Almost surely, 2^7857423 is an apocalyptic number.

7857423 is a deficient number, since it is larger than the sum of its proper divisors (5113665).

7857423 is a wasteful number, since it uses less digits than its factorization.

7857423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124734 (or 124731 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 7857423 is about 2803.1095233686. The cubic root of 7857423 is about 198.8047292024.

The spelling of 7857423 in words is "seven million, eight hundred fifty-seven thousand, four hundred twenty-three".