142678 has 4 divisors (see below), whose sum is σ = 214020. Its totient is φ = 71338.

The previous prime is 142673. The next prime is 142697. The reversal of 142678 is 876241.

142678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 876241 = 251 ⋅3491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142673) by changing a digit.

142678 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35668 + ... + 35671.

It is an arithmetic number, because the mean of its divisors is an integer number (53505).

2¹⁴²⁶⁷⁸ is an apocalyptic number.

142678 is a deficient number, since it is larger than the sum of its proper divisors (71342).

142678 is an equidigital number, since it uses as much as digits as its factorization.

142678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71341.

The product of its digits is 2688, while the sum is 28.

The square root of 142678 is about 377.7274149436. The cubic root of 142678 is about 52.2539354346.

It can be divided in two parts, 142 and 678, that added together give a triangular number (820 = T₄₀).

The spelling of 142678 in words is "one hundred forty-two thousand, six hundred seventy-eight".