142589081 has 8 divisors (see below), whose sum is σ = 151430760. Its totient is φ = 133797888.

The previous prime is 142589077. The next prime is 142589093. The reversal of 142589081 is 180985241.

It can be written as a sum of positive squares in 4 ways, for example, as 502681 + 142086400 = 709^2 + 11920^2 .

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

It is not a de Polignac number, because 142589081 - 2² = 142589077 is a prime.

It is a super-2 number, since 2×142589081² = 40663292040849122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142589011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6716 + ... + 18173.

It is an arithmetic number, because the mean of its divisors is an integer number (18928845).

Almost surely, 2^142589081 is an apocalyptic number.

It is an amenable number.

142589081 is a deficient number, since it is larger than the sum of its proper divisors (8841679).

142589081 is a wasteful number, since it uses less digits than its factorization.

142589081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25243.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 142589081 is about 11941.0669958760. The cubic root of 142589081 is about 522.4307804185.

The spelling of 142589081 in words is "one hundred forty-two million, five hundred eighty-nine thousand, eighty-one".