823142 has 8 divisors (see below), whose sum is σ = 1247736. Its totient is φ = 407232.

The previous prime is 823129. The next prime is 823153. The reversal of 823142 is 241328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1928 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (155967).

2⁸²³¹⁴² is an apocalyptic number.

823142 is a deficient number, since it is larger than the sum of its proper divisors (424594).

823142 is a wasteful number, since it uses less digits than its factorization.

823142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342.

The product of its digits is 384, while the sum is 20.

The square root of 823142 is about 907.2717343773. The cubic root of 823142 is about 93.7184118764.

It can be divided in two parts, 8 and 23142, that multiplied together give a triangular number (185136 = T₆₀₈).

The spelling of 823142 in words is "eight hundred twenty-three thousand, one hundred forty-two".