142081 has 4 divisors (see below), whose sum is σ = 145152. Its totient is φ = 139012.

The previous prime is 142067. The next prime is 142097. The reversal of 142081 is 180241.

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.

It is a cyclic number.

It is not a de Polignac number, because 142081 - 2⁵ = 142049 is a prime.

It is a super-2 number, since 2×142081² = 40374021122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (36288).

2¹⁴²⁰⁸¹ is an apocalyptic number.

It is an amenable number.

142081 is a deficient number, since it is larger than the sum of its proper divisors (3071).

142081 is an equidigital number, since it uses as much as digits as its factorization.

142081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 142081 is about 376.9363341468. The cubic root of 142081 is about 52.1809524218.

The spelling of 142081 in words is "one hundred forty-two thousand, eighty-one".