142855770 has 32 divisors (see below), whose sum is σ = 343196352. Its totient is φ = 38056832.

The previous prime is 142855751. The next prime is 142855787. The reversal of 142855770 is 77558241.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41329 + ... + 44651.

It is an arithmetic number, because the mean of its divisors is an integer number (10724886).

Almost surely, 2^142855770 is an apocalyptic number.

142855770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142855770 is an abundant number, since it is smaller than the sum of its proper divisors (200340582).

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

142855770 is a wasteful number, since it uses less digits than its factorization.

142855770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 142855770 is about 11952.2286624713. The cubic root of 142855770 is about 522.7562840014.

The spelling of 142855770 in words is "one hundred forty-two million, eight hundred fifty-five thousand, seven hundred seventy".