142839722 has 16 divisors (see below), whose sum is σ = 220054560. Its totient is φ = 69500592.

The previous prime is 142839659. The next prime is 142839727. The reversal of 142839722 is 227938241.

It is not an unprimeable number, because it can be changed into a prime (142839727) 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 7 ways as a sum of consecutive naturals, for example, 21404 + ... + 27272.

It is an arithmetic number, because the mean of its divisors is an integer number (13753410).

Almost surely, 2^142839722 is an apocalyptic number.

142839722 is a deficient number, since it is larger than the sum of its proper divisors (77214838).

142839722 is a wasteful number, since it uses less digits than its factorization.

142839722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6197.

The product of its digits is 48384, while the sum is 38.

The square root of 142839722 is about 11951.5573043851. The cubic root of 142839722 is about 522.7367082969.

The spelling of 142839722 in words is "one hundred forty-two million, eight hundred thirty-nine thousand, seven hundred twenty-two".