823152142 has 4 divisors (see below), whose sum is σ = 1234728216. Its totient is φ = 411576070.

The previous prime is 823152137. The next prime is 823152163. The reversal of 823152142 is 241251328.

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

It is a self number, because there is not a number n which added to its sum of digits gives 823152142.

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 as a sum of consecutive naturals, namely, 205788034 + ... + 205788037.

It is an arithmetic number, because the mean of its divisors is an integer number (308682054).

Almost surely, 2^823152142 is an apocalyptic number.

823152142 is a deficient number, since it is larger than the sum of its proper divisors (411576074).

823152142 is a wasteful number, since it uses less digits than its factorization.

823152142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411576073.

The product of its digits is 3840, while the sum is 28.

The square root of 823152142 is about 28690.6281213918. The cubic root of 823152142 is about 937.1879677891.

The spelling of 823152142 in words is "eight hundred twenty-three million, one hundred fifty-two thousand, one hundred forty-two".