142890284 has 24 divisors (see below), whose sum is σ = 259209216. Its totient is φ = 68850000.

The previous prime is 142890281. The next prime is 142890299. The reversal of 142890284 is 482098241.

It is not an unprimeable number, because it can be changed into a prime (142890281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28829 + ... + 33419.

It is an arithmetic number, because the mean of its divisors is an integer number (10800384).

Almost surely, 2^142890284 is an apocalyptic number.

It is an amenable number.

142890284 is a deficient number, since it is larger than the sum of its proper divisors (116318932).

142890284 is a wasteful number, since it uses less digits than its factorization.

142890284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877 (or 4875 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 142890284 is about 11953.6724064197. The cubic root of 142890284 is about 522.7983799735.

The spelling of 142890284 in words is "one hundred forty-two million, eight hundred ninety thousand, two hundred eighty-four".