142831984 has 10 divisors (see below), whose sum is σ = 276737000. Its totient is φ = 71415984.

The previous prime is 142831981. The next prime is 142831993. The reversal of 142831984 is 489138241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142831981) by changing a digit.

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, 4463484 + ... + 4463515.

It is an arithmetic number, because the mean of its divisors is an integer number (27673700).

Almost surely, 2^142831984 is an apocalyptic number.

It is an amenable number.

142831984 is a deficient number, since it is larger than the sum of its proper divisors (133905016).

142831984 is an equidigital number, since it uses as much as digits as its factorization.

142831984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8927007 (or 8927001 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 142831984 is about 11951.2335764974. The cubic root of 142831984 is about 522.7272687898.

The spelling of 142831984 in words is "one hundred forty-two million, eight hundred thirty-one thousand, nine hundred eighty-four".