142885 has 12 divisors (see below), whose sum is σ = 186084. Its totient is φ = 104960.

The previous prime is 142873. The next prime is 142897. The reversal of 142885 is 588241.

142885 = 115² + 116² + ... + 124².

It is a Cunningham number, because it is equal to 378²+1.

It is an interprime number because it is at equal distance from previous prime (142873) and next prime (142897).

It can be written as a sum of positive squares in 6 ways, for example, as 31329 + 111556 = 177^2 + 334^2 .

It is not a de Polignac number, because 142885 - 2⁷ = 142757 is a prime.

It is a super-2 number, since 2×142885² = 40832246450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3465 + ... + 3505.

It is an arithmetic number, because the mean of its divisors is an integer number (15507).

2¹⁴²⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

142885 is a deficient number, since it is larger than the sum of its proper divisors (43199).

142885 is an equidigital number, since it uses as much as digits as its factorization.

142885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 63 counting only the distinct ones).

The product of its digits is 2560, while the sum is 28.

The square root of 142885 is about 378.0013227490. The cubic root of 142885 is about 52.2791935634.

The spelling of 142885 in words is "one hundred forty-two thousand, eight hundred eighty-five".