142182881 has 4 divisors (see below), whose sum is σ = 142507200. Its totient is φ = 141858564.

The previous prime is 142182877. The next prime is 142182893. The reversal of 142182881 is 188281241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188281241 = 19 ⋅9909539.

It is a cyclic number.

It is not a de Polignac number, because 142182881 - 2² = 142182877 is a prime.

It is a super-2 number, since 2×142182881² = 40431943298920322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142182841) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 161501 + ... + 162378.

It is an arithmetic number, because the mean of its divisors is an integer number (35626800).

Almost surely, 2^142182881 is an apocalyptic number.

It is an amenable number.

142182881 is a deficient number, since it is larger than the sum of its proper divisors (324319).

142182881 is an equidigital number, since it uses as much as digits as its factorization.

142182881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324318.

The product of its digits is 8192, while the sum is 35.

The square root of 142182881 is about 11924.0463350324. The cubic root of 142182881 is about 521.9342178180.

The spelling of 142182881 in words is "one hundred forty-two million, one hundred eighty-two thousand, eight hundred eighty-one".