142844644 has 24 divisors (see below), whose sum is σ = 253804320. Its totient is φ = 70335936.

The previous prime is 142844629. The next prime is 142844677. The reversal of 142844644 is 446448241.

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 7 ways as a sum of consecutive naturals, for example, 108639 + ... + 109945.

It is an arithmetic number, because the mean of its divisors is an integer number (10575180).

Almost surely, 2^142844644 is an apocalyptic number.

It is an amenable number.

142844644 is a deficient number, since it is larger than the sum of its proper divisors (110959676).

142844644 is a wasteful number, since it uses less digits than its factorization.

142844644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707 (or 1705 counting only the distinct ones).

The product of its digits is 98304, while the sum is 37.

The square root of 142844644 is about 11951.7632171994. The cubic root of 142844644 is about 522.7427124170.

The spelling of 142844644 in words is "one hundred forty-two million, eight hundred forty-four thousand, six hundred forty-four".