142984 has 16 divisors (see below), whose sum is σ = 273420. Its totient is φ = 70080.

The previous prime is 142981. The next prime is 142993. The reversal of 142984 is 489241.

It can be written as a sum of positive squares in 2 ways, for example, as 142884 + 100 = 378^2 + 10^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (142981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342 + ... + 634.

2¹⁴²⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

142984 is a deficient number, since it is larger than the sum of its proper divisors (130436).

142984 is a wasteful number, since it uses less digits than its factorization.

142984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 356 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 142984 is about 378.1322519966. The cubic root of 142984 is about 52.2912649151.

The spelling of 142984 in words is "one hundred forty-two thousand, nine hundred eighty-four".