142678220 has 48 divisors (see below), whose sum is σ = 316915200. Its totient is φ = 53807040.

The previous prime is 142678199. The next prime is 142678259. The reversal of 142678220 is 22876241.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90035 + ... + 91605.

It is an arithmetic number, because the mean of its divisors is an integer number (6602400).

Almost surely, 2^142678220 is an apocalyptic number.

142678220 is a gapful number since it is divisible by the number (10) 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 142678220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158457600).

142678220 is an abundant number, since it is smaller than the sum of its proper divisors (174236980).

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

142678220 is a wasteful number, since it uses less digits than its factorization.

142678220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 142678220 is about 11944.7988681267. The cubic root of 142678220 is about 522.5396229195.

The spelling of 142678220 in words is "one hundred forty-two million, six hundred seventy-eight thousand, two hundred twenty".