142665 has 8 divisors (see below), whose sum is σ = 228288. Its totient is φ = 76080.

The previous prime is 142657. The next prime is 142673. The reversal of 142665 is 566241.

It is an interprime number because it is at equal distance from previous prime (142657) and next prime (142673).

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

It is not a de Polignac number, because 142665 - 2³ = 142657 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4741 + ... + 4770.

It is an arithmetic number, because the mean of its divisors is an integer number (28536).

2¹⁴²⁶⁶⁵ is an apocalyptic number.

142665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142665 is a deficient number, since it is larger than the sum of its proper divisors (85623).

142665 is an equidigital number, since it uses as much as digits as its factorization.

142665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9519.

The product of its digits is 1440, while the sum is 24.

The square root of 142665 is about 377.7102063752. The cubic root of 142665 is about 52.2523483602.

The spelling of 142665 in words is "one hundred forty-two thousand, six hundred sixty-five".