143942 has 4 divisors (see below), whose sum is σ = 215916. Its totient is φ = 71970.

The previous prime is 143909. The next prime is 143947. The reversal of 143942 is 249341.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143942.

It is not an unprimeable number, because it can be changed into a prime (143947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35984 + ... + 35987.

It is an arithmetic number, because the mean of its divisors is an integer number (53979).

2¹⁴³⁹⁴² is an apocalyptic number.

143942 is a deficient number, since it is larger than the sum of its proper divisors (71974).

143942 is an equidigital number, since it uses as much as digits as its factorization.

143942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71973.

The product of its digits is 864, while the sum is 23.

The square root of 143942 is about 379.3968898133. The cubic root of 143942 is about 52.4077897632.

The spelling of 143942 in words is "one hundred forty-three thousand, nine hundred forty-two".