923842 has 4 divisors (see below), whose sum is σ = 1385766. Its totient is φ = 461920.

The previous prime is 923833. The next prime is 923849. The reversal of 923842 is 248329.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248329 = 167 ⋅1487.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 269361 = 809^2 + 519^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 923842.

It is not an unprimeable number, because it can be changed into a prime (923849) by changing a digit.

923842 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230959 + ... + 230962.

2⁹²³⁸⁴² is an apocalyptic number.

923842 is a deficient number, since it is larger than the sum of its proper divisors (461924).

923842 is a wasteful number, since it uses less digits than its factorization.

923842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461923.

The product of its digits is 3456, while the sum is 28.

The square root of 923842 is about 961.1669990173. The cubic root of 923842 is about 97.3940817787.

The spelling of 923842 in words is "nine hundred twenty-three thousand, eight hundred forty-two".