142942 has 4 divisors (see below), whose sum is σ = 214416. Its totient is φ = 71470.

The previous prime is 142939. The next prime is 142949. The reversal of 142942 is 249241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249241 = 47 ⋅5303.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35734 + ... + 35737.

It is an arithmetic number, because the mean of its divisors is an integer number (53604).

2¹⁴²⁹⁴² is an apocalyptic number.

142942 is a deficient number, since it is larger than the sum of its proper divisors (71474).

142942 is an equidigital number, since it uses as much as digits as its factorization.

142942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71473.

The product of its digits is 576, while the sum is 22.

The square root of 142942 is about 378.0767117927. The cubic root of 142942 is about 52.2861444163.

The spelling of 142942 in words is "one hundred forty-two thousand, nine hundred forty-two".