142920823 has 4 divisors (see below), whose sum is σ = 142955488. Its totient is φ = 142886160.

The previous prime is 142920803. The next prime is 142920857. The reversal of 142920823 is 328029241.

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

It is a cyclic number.

It is not a de Polignac number, because 142920823 - 2¹³ = 142912631 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 (142920803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10158 + ... + 19723.

It is an arithmetic number, because the mean of its divisors is an integer number (35738872).

Almost surely, 2^142920823 is an apocalyptic number.

142920823 is a deficient number, since it is larger than the sum of its proper divisors (34665).

142920823 is an equidigital number, since it uses as much as digits as its factorization.

142920823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34664.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 142920823 is about 11954.9497280415. The cubic root of 142920823 is about 522.8356220729.

The spelling of 142920823 in words is "one hundred forty-two million, nine hundred twenty thousand, eight hundred twenty-three".