142775 has 6 divisors (see below), whose sum is σ = 177072. Its totient is φ = 114200.

The previous prime is 142771. The next prime is 142787. The reversal of 142775 is 577241.

It is not a de Polignac number, because 142775 - 2² = 142771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142775.

It is not an unprimeable number, because it can be changed into a prime (142771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2831 + ... + 2880.

It is an arithmetic number, because the mean of its divisors is an integer number (29512).

2¹⁴²⁷⁷⁵ is an apocalyptic number.

142775 is a deficient number, since it is larger than the sum of its proper divisors (34297).

142775 is an equidigital number, since it uses as much as digits as its factorization.

142775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721 (or 5716 counting only the distinct ones).

The product of its digits is 1960, while the sum is 26.

The square root of 142775 is about 377.8557925982. The cubic root of 142775 is about 52.2657744089.

The spelling of 142775 in words is "one hundred forty-two thousand, seven hundred seventy-five".