142730808 has 128 divisors (see below), whose sum is σ = 408844800. Its totient is φ = 41126400.

The previous prime is 142730807. The next prime is 142730821. The reversal of 142730808 is 808037241.

142730808 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 11947²-1.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142730807) 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 in 31 ways as a sum of consecutive naturals, for example, 788478 + ... + 788658.

It is an arithmetic number, because the mean of its divisors is an integer number (3194100).

Almost surely, 2^142730808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142730808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204422400).

142730808 is an abundant number, since it is smaller than the sum of its proper divisors (266113992).

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

142730808 is a wasteful number, since it uses less digits than its factorization.

142730808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 142730808 is about 11946.9999581485. Note that the first 4 decimals coincide. The cubic root of 142730808 is about 522.6038138387.

The spelling of 142730808 in words is "one hundred forty-two million, seven hundred thirty thousand, eight hundred eight".