142771 has 2 divisors, whose sum is σ = 142772. Its totient is φ = 142770.

The previous prime is 142759. The next prime is 142787. The reversal of 142771 is 177241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142771 - 2¹⁷ = 11699 is a prime.

It is a Chen prime.

142771 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (142711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71385 + 71386.

It is an arithmetic number, because the mean of its divisors is an integer number (71386).

2¹⁴²⁷⁷¹ is an apocalyptic number.

142771 is a deficient number, since it is larger than the sum of its proper divisors (1).

142771 is an equidigital number, since it uses as much as digits as its factorization.

142771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392, while the sum is 22.

The square root of 142771 is about 377.8504995365. The cubic root of 142771 is about 52.2652863098.

The spelling of 142771 in words is "one hundred forty-two thousand, seven hundred seventy-one", and thus it is an iban number.