9142823 has 4 divisors (see below), whose sum is σ = 9233448. Its totient is φ = 9052200.

The previous prime is 9142813. The next prime is 9142831. The reversal of 9142823 is 3282419.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9142823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9142813) 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, 45161 + ... + 45362.

It is an arithmetic number, because the mean of its divisors is an integer number (2308362).

Almost surely, 2^9142823 is an apocalyptic number.

9142823 is a deficient number, since it is larger than the sum of its proper divisors (90625).

9142823 is a wasteful number, since it uses less digits than its factorization.

9142823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90624.

The product of its digits is 3456, while the sum is 29.

The square root of 9142823 is about 3023.7101382242. The cubic root of 9142823 is about 209.1029231397.

The spelling of 9142823 in words is "nine million, one hundred forty-two thousand, eight hundred twenty-three".