142668 has 24 divisors (see below), whose sum is σ = 370160. Its totient is φ = 47520.

The previous prime is 142657. The next prime is 142673. The reversal of 142668 is 866241.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 553 + ... + 768.

2¹⁴²⁶⁶⁸ is an apocalyptic number.

142668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

142668 is an abundant number, since it is smaller than the sum of its proper divisors (227492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142668 is a wasteful number, since it uses less digits than its factorization.

142668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1326 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 142668 is about 377.7141776529. The cubic root of 142668 is about 52.2527146167.

The spelling of 142668 in words is "one hundred forty-two thousand, six hundred sixty-eight".