142905285 has 24 divisors (see below), whose sum is σ = 254400120. Its totient is φ = 74155392.

The previous prime is 142905263. The next prime is 142905293. The reversal of 142905285 is 582509241.

142905285 is a `hidden beast` number, since 1 + 42 + 90 + 528 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7834401 + 135070884 = 2799^2 + 11622^2 .

It is not a de Polignac number, because 142905285 - 2⁷ = 142905157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41250 + ... + 44579.

It is an arithmetic number, because the mean of its divisors is an integer number (10600005).

Almost surely, 2^142905285 is an apocalyptic number.

142905285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142905285 is a deficient number, since it is larger than the sum of its proper divisors (111494835).

142905285 is a wasteful number, since it uses less digits than its factorization.

142905285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85877 (or 85874 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 142905285 is about 11954.2998540274. The cubic root of 142905285 is about 522.8166742523.

The spelling of 142905285 in words is "one hundred forty-two million, nine hundred five thousand, two hundred eighty-five".