142823644 has 12 divisors (see below), whose sum is σ = 250047000. Its totient is φ = 71381648.

The previous prime is 142823599. The next prime is 142823651. The reversal of 142823644 is 446328241.

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, 5682 + ... + 17830.

It is an arithmetic number, because the mean of its divisors is an integer number (20837250).

Almost surely, 2^142823644 is an apocalyptic number.

It is an amenable number.

142823644 is a deficient number, since it is larger than the sum of its proper divisors (107223356).

142823644 is a wasteful number, since it uses less digits than its factorization.

142823644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15092 (or 15090 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 142823644 is about 11950.8846534472. The cubic root of 142823644 is about 522.7170945274.

The spelling of 142823644 in words is "one hundred forty-two million, eight hundred twenty-three thousand, six hundred forty-four".