142886281 has 8 divisors (see below), whose sum is σ = 149529600. Its totient is φ = 136278912.

The previous prime is 142886279. The next prime is 142886299. The reversal of 142886281 is 182688241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142886281 - 2¹ = 142886279 is a prime.

It is a super-2 number, since 2×142886281² = 40832978596021922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142886221) 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, 681 + ... + 16918.

It is an arithmetic number, because the mean of its divisors is an integer number (18691200).

Almost surely, 2^142886281 is an apocalyptic number.

It is an amenable number.

142886281 is a deficient number, since it is larger than the sum of its proper divisors (6643319).

142886281 is a wasteful number, since it uses less digits than its factorization.

142886281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17975.

The product of its digits is 49152, while the sum is 40.

The square root of 142886281 is about 11953.5049671634. The cubic root of 142886281 is about 522.7934979494.

The spelling of 142886281 in words is "one hundred forty-two million, eight hundred eighty-six thousand, two hundred eighty-one".