142489984 has 96 divisors (see below), whose sum is σ = 351667440. Its totient is φ = 56309760.

The previous prime is 142489967. The next prime is 142489999. The reversal of 142489984 is 489984241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150954 + ... + 151894.

Almost surely, 2^142489984 is an apocalyptic number.

142489984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142489984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175833720).

142489984 is an abundant number, since it is smaller than the sum of its proper divisors (209177456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142489984 is an equidigital number, since it uses as much as digits as its factorization.

142489984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 963 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 142489984 is about 11936.9168548667. The cubic root of 142489984 is about 522.3097255179.

The spelling of 142489984 in words is "one hundred forty-two million, four hundred eighty-nine thousand, nine hundred eighty-four".